Ruth Ella Moore, Natural Scientist
1933 became the first African-American woman to gain a PhD in a natural science
(photo courtesy She Made History site:
Wikipedia: "She was a professor and head of the Department of Bacteriology at Howard University, publishing work on tuberculosis, immunology and dental caries, the response of gut microorganisms to antibiotics, and the blood type of African-Americans. "
(xHistory xPOC xBlack xAfricanAmerican xWomen xUSA xBiologist xScientist )