Florence Rena Sabin was an American anatomist and investigator known for her research on the lymphatic system and who was considered to be one of the leading women scientists of the United States. In 1917 she became the first female full professor at John’s Hopkins University, and in 1925 she joined the Rockefeller Institute for Medical Research (now Rockefeller University) and was elected to the National Academy of Sciences, in both instances becoming the first woman to received these honors.