41. Nobelists Who Attended CSHL Symposia hartline, haldan keffer, 1935, 52, 65, MP/67. Hershey ,Alfred D.*, 1946, 51, 53,56, 58, 61, 63, 64, 66, 68, 69, 81, 84, 85, MP/69 http://library.cshl.edu/archives/archives/Nobelists who attended Symposia.htm

Carnegie Building - 1905 Nobelists who attended CSHL Symposia Cold Spring Harbor Laboratory Archives Nobelists Symposium Year Won Arber ,Werner MP/78 Altman, Sidney C/89 Baltimore, David* MP/75 Beadle,George Wells MP/58 Benacerraf ,Baruj MP/80 Berg, Paul* C/80 Bishop, John Michael MP/89 Blobel, Günther MP/99 Bloch, Konrod F. MP/64 Blumberg, Baruch S. MP/76 Burnet, Sir Frank M. MP/60 Calvin, Melvin C/61 Cech, Thomas R. C/89 Claude, Albert MP/74 Cohen, Stanley* MP/86 Cori ,Carl F. MP/47 Cori ,Gerty T. MP/47 Cournand, Andre F. MP/56 Crick, Francis H.C.* MP/62 Dale, Sir Henry H. MP/36 Delbrück, Max* MP/69 Doherty, Peter MP/96 Du Vigneaud ,Vincent C/55 Dulbecco, Renato* MP/75 Eccles ,Sir John Carew MP/63 Edelman ,Gerald M. MP/72 Furchgott, Robert F. MP/98 Gajdusek, Daniel Carleton MP/76 Gasser, Herbert S. MP/44 Gilbert, Walter* C/80 Gilman, Alfred MP/94 Glaser, Donald A. P/60 Hartline, Haldan Keffer MP/67 Hershey ,Alfred D.* MP/69 Hill ,Archibald V.* MP/22 Hodgkin ,Dorothy C. C/64 Hodgkin, Alan Lloyd MP/63 Holley, Robert W. MP/68 Hubel, David H. MP/81 Huber, Robert C/88 Huxley, Andrew Fielding

42. 20th Century Year By Year 1967 1991; hartline, haldan keffer, USA, The Rockefeller University, New York, NY, b.1903, d. 1983; and WALD, GEORGE, USA, Harvard University, Cambridge, MA, b. http://www.historycentral.com/20th/1967.html

Major Event/ Sports Nobel Prizes Pulitzer Prizes ... Popular Book s / Popular Television Shows Popular Music/ Major Events of 1967 Military Coup in Greece Six Day War Johnson meets Kosygin Che Guevera Killed ... Heart Care improves Sports NBA: Philadelphia 76ers vs. San Francisco Warriors Series: 4-2 NCAA Football: USC Record: 10-1-0 Heisman Trophy: Gary Beban, ucla, QB points: 1,968 Stanley Cup: Toronto Maple Leafs vs. Montreal Canadiens Series: 4-2 Super Bowl I: Green Bay Packers vs. Kansas City Chiefs Score: 35-10 US Open Golf: Jack Nicklaus Score: 275 Course: Baltusrol GC Location: Springfield, NJ World Series: St. Louis Cardinals vs. Boston Red Sox Series: 4-3 Top Music of 1967 1."Kind of a Drag" ... The Buckinghams 2."Ruby Tuesday" ... The Rolling Stones 3."Love Is Here and Now You're Gone" ... The Supremes 4."Penny Lane" ... The Beatles 5."Happy Together" ... The Turtles 6."Somethin' Stupid" ... Nancy Sinatra & Frank Sinatra 7."The Happening" ... The Supremes

43. CNN.com 1967 Ragnar Granit, haldan keffer hartline, George Wald. 1966 Peyton Rous, CharlesBrenton Huggins. 1965 François Jacob, André Lwoff, Jacques Monod http://www.cnn.com/SPECIALS/2001/nobel.100/medicine.html

HOME OVERVIEW PROFILE: ANNAN PURSUIT OF PEACE ... RESOURCES Medicine 2001 Leland H. Hartwell, R. Timothy Hunt, Paul M. Nurse 2000 Arvid Carlsson, Paul Greengard, Eric R. Kandel 1998 Robert F. Furchgott, Louis J. Ignarro, Ferid Murad 1997 Stanley B. Prusiner 1996 Peter C. Doherty, Rolf M. Zinkernagel 1994 Alfred G. Gilman, Martin Rodbell 1993 Richard J. Roberts, Phillip A. Sharp 1992 Edmond H. Fischer, Edwin G. Krebs 1991 Erwin Neher, Bert Sakmann 1990 Joseph E. Murray, E. Donnall Thomas 1989 J. Michael Bishop, Harold E. Varmus 1988 Sir James W. Black, Gertrude B. Elion, George H. Hitchings 1987 Susumu Tonegawa 1986 Stanley Cohen, Rita Levi-Montalcini 1985 Michael S. Brown, Joseph L. Goldstein 1983 Barbara McClintock 1981 Roger W. Sperry, David H. Hubel, Torsten N. Wiesel 1980 Baruj Benacerraf, Jean Dausset, George D. Snell 1979 Allan M. Cormack, Godfrey N. Hounsfield 1978 Werner Arber, Daniel Nathans, Hamilton O. Smith 1977 Roger Guillemin, Andrew V. Schally, Rosalyn Yalow 1976 Baruch S. Blumberg, D. Carleton Gajdusek 1975 David Baltimore, Renato Dulbecco, Howard Martin Temin

44. University Of Chicago News: Nobel Laureates with haldan keffer hartline and Ragnar Granit “for their discoveries concerningthe primary physiological and chemical visual processes in the eye.” http://www-news.uchicago.edu/resources/nobel/physmed.html

University of Chicago News: Resources University of Chicago Physiology or Medicine Nobel Laureates Seventy-eight Laureates have been faculty members, students or researchers at the University of Chicago. Eleven of those Laureates won prizes in Physiology or Medicine. Roger W. Sperry Ph.D., 1941; Assistant Professor in the Department of Anatomy , 1946-53; Assistant Professor in the Departments of Anatomy and Psychology The Nobel Prize in Physiology or Medicine 1981 with David H. Hubel, M.D., and Torsten N. Wiesel, M.D. George Wald Postdoctoral Fellow, 1932-34. The Nobel Prize in Physiology or Medicine 1967 with Haldan Keffer Hartline and Ragnar Granit Charles Brenton Huggins Instructor of Surgery, 1927-29; Assistant Professor, 1929-33; Associate Professor, 1933-36; Professor, 1936; Director of the Ben May Laboratory for Cancer Research , 1951-69; William B. Ogden Distinguished Service Professor, 1962-present. The Nobel Prize in Physiology or Medicine 1966 with Peyton Rous Konrad Bloch Assistant Professor in the Institute of Radiobiology and in the Departments of Biochemistry and Biophysics, 1946-48; Associate Professor, 1948-54; Professor, 1954. The Nobel Prize in Physiology or Medicine 1964 with Feodor Lynen Sir John Carew Eccles Professorial Lecturer in the Department of Physiology The Nobel Prize in Physiology or Medicine 1963 with Sir Alan Lloyd Hodgkin and Sir Andrew Fielding Huxley James Dewey Watson Ph.B., 1946; S.B., 1947; D.Sc. (honorary), 1961.

45. Nobel Prize In Physiology Or Medicine Chronology 1997 STANLEY B 1967 GRANIT , haldan keffer hartline and GEORGE WALD for their discoveriesconcerning the primary physiological and chemical visual processes in the eye. http://www.thesciencebookstore.com/chronmed.asp

Home Page About Us Books Prints and Maps ... SciImages Nobel Prize in Physiology or Medicine Chronology STANLEY B. PRUSINER for his discovery of Prions - a new biological principle of infection PETER C. DOHERTY and ROLF M. ZINKERNAGEL for their discoveries concerning the specificity of the cell mediated immune defence. EDWARD B. LEWIS, CHRISTIANE NÜSSLEIN-VOLHARD and ERIC F. WIESCHAUS for their discoveries concerning the genetic control of early embryonic development. ALFRED G. GILMAN and MARTIN RODBELL for their discovery of G-proteins and the role of these proteins in signal transduction in cells. RICHARD J. ROBERTS and PHILLIP A. SHARP for their independent discoveries of split genes. EDMOND H. FISCHER and EDWIN G. KREBS for their discoveries concerning reversible protein phosphorylation as a biological regulatory mechanism. ERWIN NEHER and BERT SAKMANN for their discoveries concerning the function of single ion channels in cells. JOSEPH E. MURRAY and E. DONNALL THOMAS for their discoveries concerning organ and cell transplantation in the treatment of human disease. J. MICHAEL BISHOP and HAROLD E. VARMUS for their discovery of the cellular origin of retroviral oncogenes.

46. AIP International Catalog Of Sources hartline, H. keffer, 1903. Hill, AV (Archibald Vivian), 1886- Frank Brink,Leslie A. Chambers, Britton Chance, haldan keffer hartline, and AV Hill. http://www.aip.org/history/catalog/2999.html

If you are not immediately redirected, please click here My List - Help Browse Archival Resources Archival Finding Aids Books Photos Browse FAQs Past Searches History Home Search: Author Subject Title Journal/Newspaper Title Series Computer File (Software) Title Video Title Refine Search AIP Niels Bohr Library Item Information Holdings More by this author Bronk, Detlev W. (Detlev Wulf), 1897-1975. Subjects Bronk, Detlev W. (Detlev Wulf), 1897-1975. Adrian, Edgar Douglas Adrian, Baron, 1889-1977. Chance, Britton. Hartline, H. Keffer, 1903- Hill, A. V. (Archibald Vivian), 1886- Physiology Study and teaching. Biophysics Study and teaching. Browse Catalog by author: Bronk, Detlev W. (Detlev Wulf), 1897-1975. by title: Papers, 1840-1978, (... MARC Display Papers, 1840-1978, (bulk 1940-1975) by Bronk, Detlev W. (Detlev Wulf), 1897-1975. Description: 120 cubic ft. Owning Repository: Rockefeller Archive Center. 15 Dayton Avenue, Pocantico Hills, North Tarrytown, New York 10591-1598. Country of Repository: USA Biography/History: Biophysicist and educator, born in New York City, a decendant of Jonas Bronck for whom the Bronx was named. Swarthmore College, B.A., 1920; University of Michigan, M.S., 1922, and PhD. in physics and physiology, 1926. A Fellow of the National Research Council, 1928-1929; Coordinator of Research, Air Surgeons Office of the U. S. Army Air Forces; President, Johns Hopkins University, 1849-1953; President, Rockefeller University, 1953-1968. Professional activities included President of the National Academy of Sciences, 1950-1962; Chairman of the Board of the National Science Foundation, 1956-1964; and member of the President's Science Advisory Committee, 1956-1963.

47. Vision In Limulus haldan keffer hartline. One of the scientists who took advantage of this remarkableanimal was H. keffer hartline. He was able to isolate and study the http://www.mbl.edu/animals/Limulus/vision/hartline.html

Haldan Keffer Hartline One of the scientists who took advantage of this remarkable animal was H. Keffer Hartline. He was able to isolate and study the activity of single nerve fibers as they relayed signals from single ommatidia to the brain in Limulus. In 1932 he published a paper titled "Nerve Impulses from Single Receptors in the Eye" describing this work. It was his work in clarifying how ommatidia interact with each other, however, that led to understanding the mechanisms of lateral inhibition and won him the Nobel Prize. Web sites which feature lateral inhibition http://www.exploratorium.edu/xref/phenomena/lateral_inhibition.html http://serendip.brynmawr.edu/bb/latinhib.html Lateral inhibition is a process that animals, including humans, use to better distinguish borders. When you look at the ocean horizon the ocean appears darker at the horizon, at the boundary between sea and sky. This apparent difference in light intensity is not actually there but is created by our visual receptors and is known as lateral inhibition. This process increases contrast and results in a sharpening of vision. In fact, computers sharpen images by almost the same process process. (the illustration below illustrates both lateral inhibition and a sharpening filter from a graphics program.) What this means is that the signals coming from the outside are actually altered before being sent to the brain so that what we see isn't necessarily there. The way this works is as follows. Impulses originate in the eccentric cell when the cell is stimulated by light . This signal is transmitted through the axon then to the optic nerve to the brain.

48. SIMR - Centenary Survey Of Nobel Laureates 1967 Ragnar GRANIT, haldan keffer hartline and George WALD describe thephysiological and chemical processes of vision. 1968 Robert W. HOLLEY, http://www.simr.org.uk/pages/nobel/time_line_7.html

Home Biotechnology Celebrity support Benefits of animal research ... Links Nobel Prize Winners in Physiology and Medicine (1960 - 1969) Alfred Bernhard Nobel Nobel Survey Index Photo: Wellcome Institute Library The Timeline "I agree that animal experimentation should be humane and regulated, but the regulations must not be so onerous as to impede legitimate experimentation, which is now the case in many places." - Michael S Brown, M.D., Nobel Prizewinner 1985 Sir Frank MacFarlane BURNET and Sir Peter Brian MEDAWAR - describe acquired immunological tolerance. Georg von BŠKŠSY - shows how the inner ear works. Francis Harry Comptom CRICK, James Dewey WATSON and Maurice Hugh Frederick WILKINS - discover the molecular structure of DNA and RNA and how they transmit genetic information. Sir John Carew ECCLES, Sir Alan Lloyd HODGKIN and Sir Andrew Fielding HUXLEY - discover the ionic mechanisms by which nerves function. Peyton ROUS - discovers tumour-inducing viruses. Charles Brenton HUGGINS - devises the hormonal treatment of prostatic cancer.

49. Nobel Prizes In Neuroscience haldan keffer hartline (USA) Nobel Fnd. NPIA keffer hartline s experimentsrevealed the importance of lateral inhibition in the retina. http://home.earthlink.net/~electrikmonk/Neuro/artNobel.htm

50. Royal Society About The Society History Of Science hartline, haldan keffer. Biographical Memoirs 1985 vol 31 pp 261292, plate, byR Granit and F Ratliff. Hartree, Douglas Rayner http://www.royalsoc.ac.uk/page.asp?id=2371

51. Índice Alfabético De Los Premios Nobel De Fisiología O Medicina (1901-1998) hartline, haldan keffer (1967) HENCH, Philipp Showalter (1950) HERSHEY, AlfredDay (1969) HESS, Walter Rudolf (1949) HEYMANS, Corneille Jean Françoise (1938 http://www.bvs.sld.cu/revistas/his/vol_2_99/his12299.htm

Indice Anterior Siguiente Formato .PDF ADRIAN, Edgar Douglas (1932) ARBER, Werner (1978) AXELROD, Julius (1970) BALTIMORE, David (1975) BANTING, Frederick Grant (1923) BEADLE, Georges Wells (1958) BEHRING, Emil Adolf von (1901) BENACERRAF, Baruj (1980) BISHOP, Michael John (1989) BLACK, James Whyte (1988) BLOCH, Konrad Emil (1964) BLUMBERG, Baruch Samuel (1976) BORDET, Jules Jean Baptiste Vicent (1919) BOVET, Daniel (1957) BROWN, Michael Stuart (1985) BURNET, Frank Macfarlane (1960) CARREL, Alexis (1912) CHAIN, Ernest Boris (1945) CLAUDE, Albert (1974) COHEN, Stanley (1986) CORI, Carl Ferdinand (1947) CORI, Gerty Theresa Radnitz (1947) CORMACK, Allan MacLeod (1979) CRICK, Francis Harry Compton (1962) DALE, Henry Hallet (1936) DAM, Henrik Carl Peter (1943) DAUSSET, Jean (1980) DOHERTY, Peter C. (1996) DOISY, Edward Adelbert (1943) DOMAGK, Gerhard (1939) DULBECCO, Renato (1975) ECCLES, John Carew (1963) EDELMAN, Gerald Maurice (1972) EHRLICH, Paul (1908) EIJKMAN, Christiaan (1929) EINTHOVEN, Willem (1924) ELION, Gertrude Belle (1988) ENDERS, John Franklin (1954)

52. The Johns Hopkins:nobel Prize Winners haldan keffer hartline MD 1927; Professor of Biophysics, 194954 Nobel Prize inMedicine, 1967. Lars Onsager Associate in Chemistry, 1927-28 http://webapps.jhu.edu/jhuniverse/information_about_hopkins/facts_and_statistics

go back location > jhuniverse information about hopkins facts and statistics nobel prize winners ... Printer-Friendly Version nobel prize winners The following winners of Nobel Prizes have had an association with The Johns Hopkins University, either as graduates of Johns Hopkins or as faculty of the university before, at the time of or subsequent to their receipt of the prize. Woodrow Wilson Ph.D. 1886 (History) Nobel Prize in Peace, 1919 James Franck Professor of Physics, 1935-38 Nobel Prize in Physics, 1925 Nicholas Murray Butler Lecturer, 1890-91 Nobel Prize in Peace, 1931 Thomas Hunt Morgan Ph.D. 1890 (Zoology); LL.D. 1915 Nobel Prize in Medicine, 1933 George Richards Minot Assistant in Medicine, 1914-15 Nobel Prize in Medicine, 1934 George Hoyt Whipple M.D. 1905; Associate Professor in Pathology, 1910-14 Nobel Prize in Medicine, 1934 Harold Clayton Urey Associate in Chemistry, 1924-28 Nobel Prize in Chemistry, 1934 Joseph Erlanger M.D. 1899; Assistant in Physiology, 1900-01; Instructor, 1901-03; Associate, 1903-04; Associate Professor, 1904-06; LL.D. 1947 Nobel Prize in Medicine, 1944

53. The Hindu : Laureates In Medicine: Down Memory Lane 1967 RAGNAR GRANIT , haldan keffer hartline and GEORGE WALD for their discoveriesconcerning the primary physiological and chemical visual processes in the http://www.hindu.com/thehindu/2001/10/25/stories/08250005.htm

Online edition of India's National Newspaper Thursday, October 25, 2001 Front Page National Southern States Other States ... Next Laureates in medicine: Down memory lane 2001 LELAND H. HARTWELL, R. TIMOTHY HUNT and PAUL M. NURSE for their discoveries of "key regulators of the cell cycle." 2000 ARVID CARLSSON, PAUL GREENGARD and ERIC KANDEL for their discoveries concerning signal transduction in the nervous system. 1999 GNTER BLOBEL, for the discovery that proteins have intrinsic signals that govern their transport and localization in the cell. 1998 ROBERT F. FURCHGOTT, LOUIS J. IGNARRO and FERID MURAD for their discoveries concerning nitric oxide as a signalling molecule in the cardiovascular system. 1997 STANLEY B. PRUSINER for his discovery of Prions - a new biological principle of infection 1996 PETER C. DOHERTY and ROLF M. ZINKERNAGEL for their discoveries concerning the specificity of the cell mediated immune defence. 1995 EDWARD B. LEWIS, CHRISTIANE NSSLEIN-VOLHARD and ERIC F. WIESCHAUS for their discoveries concerning the genetic control of early embryonic development. 1994 ALFRED G. GILMAN and MARTIN RODBELL for their discovery of G-proteins and the role of these proteins in signal transduction in cells.

54. Nobel Prizes (table) Manfred Eigen Ronald George Wreyford Norrish George Porter, Hans Albrecht Bethe,Ragnar Granit haldan keffer hartline George Wald, Miguel Angel Asturias http://www.infoplease.com/ce6/sci/A0835783.html

in All Infoplease Almanacs Biographies Dictionary Encyclopedia Daily Almanac for Sep 15, 2005 Skip Navigation Home Almanacs ... Word of the Day Editor's Favorites Back to School Hurricane Katrina Daylight Saving Time Hispanic Heritage Month ... Mississippi Infoplease Tools Periodic Table Conversion Tool Perpetual Calendar Year by Year ... Site Map College Center Scholarship Search College Resources Career Center Job Search Post Your Resume Continuing Ed. more . . . Search: Infoplease Info search tips Search: Biographies Bio search tips google_ad_client = 'pub-1894504138907931'; google_ad_width = 120; google_ad_height = 240; google_ad_format = '120x240_as'; google_ad_type = 'text'; google_ad_channel =''; google_color_border = ['336699','B4D0DC','DFF2FD','B0E0E6']; google_color_bg = ['FFFFFF','ECF8FF','DFF2FD','FFFFFF']; google_color_link = ['0000FF','0000CC','0000CC','000000']; google_color_url = ['008000','008000','008000','336699']; google_color_text = ['000000','6F6F6F','000000','333333']; Encyclopedia Nobel Prizes Year Peace Chemistry Physics Physiology or Medicine Literature J. H. van't Hoff

55. Modification De Haldan Keffer Hartline - Modifier - Wikipédia haldan keffer hartline Wikipedia - Translate this page NAME, hartline, haldan keffer. ALTERNATIVNAMEN. KURZBESCHREIBUNG, US-amerikanischerPhysiologe. GEBURTSDATUM, 22. Dezember 1903 http://fr.wikipedia.com/w/index.php?title=Haldan_Keffer_Hartline&action=edit

56. Especiales Diario Médico Translate this page haldan keffer hartline nació en 1903 en Bloomsburg (Pennsylvania, Estados Unidos).Sus primeros estudios los llevó a cabo en el Colegio Lafayette de su http://www.diariomedico.com/medicinasiglo/nobel1967.html

Mapa Web Contacto Publicidad Servicios Internet Sanitario Archivo Asesor Legal Congresos Deportes Dossieres Especiales DM Foros Imprescindibles DM Impuestos Informes Web Medline Multimedia Newsletters Ocio en DM Ofertas de trabajo Ondasalud.com Tienda de libros Especialidades Aparato Digestivo Enfermedades raras Ginec./Obstet. Infecciosas/Sida Med. Deportiva Med. Familiar Medicina Intensiva Med. Interna Medicina Legal Med. Nuclear Med. Preventiva Med. Trabajo Med. Urgencias Otorrinolaring. Trasplantes Form. continuada Telemedicina Secciones Sanidad Normativa Medicina Gestion Entorno Inicio Comentarios y sugerencias dminternet@recoletos.es Portada Ragnar A. Granit, Haldan K. Hartline y George Wald Ragnar A. Granit Ragnar A. Granit Haldan Keffer Hartline Haldan Keffer Hartline George Wald George Wald © Recoletos Medios Digitales S.L. Aviso Legal

57. Nobel Prices Related To Neuroscience 1967 Ragnar Granit (Sweden/Finland), haldan keffer hartline (USA) and GeorgeWald (USA) for their discoveries concerning the primary physiological and http://www.biomag.hus.fi/braincourse/nobelneuroscience.html

To BioMag home page Nobel prices related to neuroscience 1973 Physics: Brian David Josephson (Great Britain) "for his theoretical predictions of theproperties of a supercurrent through a barrier, in particular those phenomena which are generally known as the Josephson effects" 1991 Erwin Neher (Germany) Bert Sakmann (Germany) "for their discoveries concerning the function of single ion channels in cells" Alfred G. Gilman (USA) Martin Rodbell (USA) "for their discovery of G-proteins and the role of these proteins in signal transduction in cells" Send comments to Risto Ilmoniemi ( rji@biomag.helsinki.fi BioMag Laboratory, Helsinki University Central Hospital P.O. Box 340, FIN-00029 HUS, Finland FAX +358-9-47175781, Tel. +358-9-47172096, +358-50-5562964 http://www.biomag.helsinki.fi

58. Giải Nobel Y Học Gi?i du?c trao cho RAGNAR GRANIT, haldan keffer hartline và GEORGE WALD vì nh?ngkhám phá liên quan d?n nh?ng quá trình hoá h?c và sinh lý h?c co b?n c?a http://www.cimsi.org.vn/danhnhan/giaiNOBELyh.htm

Ng y 4 th¡ng 10 vừa qua, giải Nobel Y học năm 2004 đ£ được trao cho 2 nh  khoa học Mỹ l  Richard Axel v  Linda B. Buck với c´ng tr¬nh nghiªn cứu "C¡c thụ thể m¹i v  tổ chức của hệ thống khứu gi¡c" Chi tiết Hội đồng Nobel Viện Karolinska (Thụy iển) đ£ quyết định trao giải thưởng Nobel sinh l½ v  y học cho hai nh  b¡c học Paul C. Lauterbur v  Peter Mansfield đ£ c³ c´ng ph¡t minh những ứng dụng của hiện tượng cộng hưởng từ (magnetic resonance) trong y học. Chi tiết Giải Nobel Y Sinh học năm 2002 được trao cho Sydney Brenner, H. Robert Horvitz v  John E. Sulston v¬ những kh¡m ph¡ của họ về "iều h²a di truyền trong ph¡t triển tạng v  chết tế b o theo chÆ°Æ¡ng tr¬nh" Chi tiết Giải Nobel Y học năm 2001 thuộc về c¡c c´ng tr¬nh kh¡m ph¡ sá»± kiểm so¡t chu kỳ của tế b o. C¡c nh  khoa học đ£ t¬m ra c¡c ph¢n tá»­ c³ vai tr² then chốt kiểm so¡t chu kỳ tế b o trong tất cả c¡c cÆ¡ thể c³ nh¢n thá»±c bao gồm nấm men, thá»±c vật, động vật v  con người. Những kh¡m ph¡ cÆ¡ bản n y c³ t¡c động to lớn v o tất cả c¡c kh­a cạnh sinh trưởng tế b o.

59. Masters Of Medicine Website haldan keffer hartline (1903 1983). American physiologist who was a cowinner (withGeorge Wald and Ragnar Granit) of the 1967 Nobel Prize in Physiology or http://emur.org/medicine/haldan-hartline.htm

Masters of Medicine! Our website is dedicated to various masters of medicine! Haldan Keffer Hartline American physiologist who was a cowinner (with George Wald and Ragnar Granit) of the 1967 Nobel Prize in Physiology or Medicine for his work in analyzing the neurophysiological mechanisms of vision. Hartline began his study of retinal electrophysiology as a National Research Council Fellow at Johns Hopkins University, Baltimore, receiving his M.D. in 1927. After attending the universities of Leipzig and Munich as an Eldridge Johnson traveling research scholar, he became professor of biophysics and chairman of the department at Johns Hopkins in 1949. He joined the staff of Rockefeller University, New York City, in 1953 as professor of neurophysiology. Hartline investigated the electrical responses of the retinas of certain arthropods, vertebrates, and mollusks because their visual systems are much simpler than those of humans and are thus easier to study. He concentrated his studies on the eye of the horseshoe crab (Limulus polyphemus). Using minute electrodes in his experiments, he obtained the first record of the electrical impulses sent by a single optic nerve fibre when the receptors connected to it are stimulated by light. He found that the receptor cells in the eye are interconnected in such a way that when one is stimulated, others nearby are depressed, thus enhancing the contrast in light patterns and sharpening the perception of shapes. Hartline thus built up a detailed understanding of the workings of individual photoreceptors and nerve fibres in the retina, and he showed how simple retinal mechanisms constitute vital steps in the integration of visual information.

60. Nat'l Academies Discovery Engine Click read to view chapter FREE online; skim displays skim view; srchsearches the chapter • haldan keffer hartline, pp. 196213 read skim srch http://lab.nap.edu/nap-cgi/discover.cgi?restric=NAP&mw=&term=assist assist, phre

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