"Katherine Koontz Sanford (June 19, 1915 – September 12, 2005), also known as Katherine Sanford Mifflin, was an American biologist and cancer researcher who worked at the National Cancer Institute nearly 50 years, serving as head of Laboratory of Cellular and Molecular Biology. In the 1940s she became was the first person to successfully clone a mammalian cell in vitro, which allowed for more efficient means of creating pure strains of cells for study...." --Wikipedia
In Kathrine Switzer was the first woman to run the Boston marathon. After realizing that a woman was running, race organizer Jock Semple went after Switzer shouting, “Get the hell out of my race and give me those numbers.
Mary Fairfax Somerville December 1780 – 28 November was a Scottish science writer and polymath. She studied mathematics and astronomy, and was the second woman scientist to receive recognition in the United Kingdom after Caroline Herschel.