Word: weigle
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Dates: during 1939-1939
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...intestines of the filthy little insects. Vaccines made from dead typhus viruses provide immunity from the disease, but such vaccines are difficult to make, for Rickettsia prowazeki cannot be easily cultured in artificial mediums, thrives and multiplies best in its natural habitat. Chief European vaccine maker is Professor Rudolf Weigl of the University of Lemberg, Poland. Last week the Paris weekly Marianne described a visit to Professor Weigl's laboratory...
Professor Weigl, said Marianne, ties a louse on a glass slide with a paper band, places it under a microscope. With a syringe and a glass tube fine as a hair, he injects a tiny drop of solution containing the virus, previously procured from infected guinea pigs, into the louse's intestinal opening. Then he imprisons the louse in a cage about the size of a matchbox, which has one side covered with fine silk gauze. Through the gauze the lice stick their mandibles. With these they suck blood from the arms of Professor Weigl and his wife...
...none of its power when passed through ten series of eggs. "The technique," said Bacteriologist Cox, "is very simple, and permits a minimum of contamination." The simplicity of this operation should permit him to make thousands of doses of typhus vaccine in the time it takes Poland's Weigl to make...