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Seibert was a fellow member of the National Tuberculosis Association's Research Committee. Here she writes to Sabin about her plans to test further the effects of tubercle cell components on immune system response, and mentions the skepticism of Dr. Boissevain, another research committee member.
Original Repository:
The American Philosophical Society. Library. Florence R. Sabin Papers
Location:
Folder: Seibert, Florence, #1
Rights:
Reproduced with permission of the American Philosophical Society.