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1929 in science
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==Medicine== * [[Alexander Fleming]] publishes an article about [[penicillin]] in the ''British Journal of Experimental Pathology'', for which he will receive the [[1945 in science|1945]] [[Nobel Prize in Physiology or Medicine]]. * [[Hans Berger]] discovers human [[electroencephalography]]. * [[Ernst Gräfenberg]] introduces [[Gräfenberg's ring]], an [[intrauterine device]], in Germany. * Clinical application of [[cardiac catheterization]] begins with German [[Werner Forssmann]] who inserts a catheter into the vein of his own forearm, guides it fluoroscopically into his right atrium, and takes an X-ray picture of it. * British surgeon [[Victor Negus]] publishes ''The Mechanism of the Larynx''.
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