April 15th U.S. physician and one of the founders of the Boston Lying-In Hospital (1832), brother of the clergyman William...

April 14th He was an English physiologist and neurosurgeon who was a pioneer in surgery on the brain and spinal cord. Before...

April 13th English physician and philosopher who, in the late 1780s, began to explore the potential medical uses of gases....

April 12th He was a German-American zoologist who specialized in heredity. He studied the X-chromosomes of butterflies. He produced a theory,...

April 11th Born 11 Apr 1755; died 21 Dec 1824 at age 69. English doctor and amateur paleontologist. He took over  general internal...

April 10th He was an American biochemist who shared with (Robert William Holley and Har Gobind Khorana) the 1968 Nobel...

April 9th Born 9 Apr 1903; died 22 Aug 1967 at age 64. Gregory (Goodwin) Pincus is an American endocrine and metabolite, and...

April 8th Born 8 Apr 1817; died 1 Apr 1894 at age 76. A French physiologist and neurologist who was a pioneer in...

April 7th Born 7 Apr 1859; died 11 Feb 1924 at age 64. German-American biologist. Best known for his experimental studies on his...

April 6th German biochemist who shared (with Konrad Bloch) the 1964 Nobel Prize for Physiology or Medicine for his research...