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Dr. Conover, a chemist, developed tetracycline, a powerful chemically altered antibiotic with fewer side effects than the drug from which it was derived.

A footnote: this is what was tracked in the landmark Coleman, Katz, Menzel, "Doctors and New Drugs". Originally done under a contract with Pfizer, the name of the drug was disguised. A classic example of Lazersfeld turning commercial  proprietary research into academically respectable research. 


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