Florence R. Sabin

<p>Florence Rena Sabin was born on November 9, 1871, in the mining town of Central City, Colorado. She earned her undergraduate degree from Smith College in 1893 before entering the Johns Hopkins University School of Medicine in 1896, graduating in 1900 among its pioneering female medical graduates.</p><p>Under the mentorship of Franklin P. Mall, Sabin constructed a 3D model of the newborn brain stem, creating the textbook <em>An Atlas of the Medulla and Midbrain</em> (1901). She solved a foundational anatomical controversy by proving through vital dye injections that the lymphatic system originates as buds from endothelial veins, rather than tissue spaces. In 1917, she was named the first female full professor at Johns Hopkins.</p><p>In 1925, Sabin became the first woman elected to the prestigious National Academy of Sciences and was appointed member of the Rockefeller Institute for Medical Research, where she led research into tuberculosis cellular pathology for thirteen years. Retiring to Denver in 1938, she launched a relentless crusade to reform Colorado's health laws, authoring the 'Sabin Health Bills' of 1947 that modernized water sanitation and slashed tuberculosis rates. Sabin died in 1953, honored by a bronze statue representing Colorado in the US Capitol's National Statuary Hall.</p>