Barnett Cohen (1891–1952) was a Russian Empire-born American

bacteriologist A bacteriologist is a microbiologist, or similarly trained professional, in bacteriology -- a subdivision of microbiology that studies bacteria, typically pathogenic ones. Bacteriologists are interested in studying and learning about bacteria, ...

who performed the first ultra-microscopic surgeries, including on

amoeba An amoeba (; less commonly spelled ameba or amœba; plural ''am(o)ebas'' or ''am(o)ebae'' ), often called an amoeboid, is a type of cell or unicellular organism with the ability to alter its shape, primarily by extending and retracting pseudop ...

.New York Times:D. BarnettCohen, Bacteriologist, 6i; Pioneer in Ultra-Microscopic Surgery Is Dead--Taught Physiological Chemistry;October 25, 1952
/ref> Cohen received his Ph.D. from

Yale University Yale University is a Private university, private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the List of Colonial Colleges, third-oldest institution of higher education in the United Sta ...

. He was president of the

Society of American Bacteriologists The American Society for Microbiology (ASM), originally the Society of American Bacteriologists, is a professional organization for scientists who study viruses, bacteria, fungi, algae, and protozoa as well as other aspects of microbiology. It wa ...

, and a member of the American Association for the Advancement of Science, the

American Chemical Society The American Chemical Society (ACS) is a scientific society based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 at New York University, the ACS currently has more than 155,000 members at all ...

, and American Public Health Association.

References

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* 1891 births 1952 deaths Emigrants from the Russian Empire to the United States Yale University alumni American bacteriologists {{US-biologist-stub