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Karl Landsteiner
14 de June
Karl Landsteiner was born on June 14th, 1868 in Baden bei Wien, Austria-Hungary. Landsteiner introduced dark field microscopy for the diagnosis of primary syphilis and worked with several associates on the characteristics of Treponema pallidum. They were able to describe the mechanism that resulted in Wassermann’s reaction. Together with Ernest Finger and others, he found that the antigen, previously extracted from a patient with syphilis, could be replaced with an extract prepared from ox hearts for this test. In 1930, he received a Nobel Prize in Physiology or Medicine.
https://jnnp.bmj.com/content/72/3/355
https://en.wikipedia.org/wiki/Karl_Landsteiner
https://en.wikipedia.org/wiki/Ernst_Finger