Albert Montgomery Kligman (March 17, 1916 - February 9, 2010) was an American dermatologist who co-invented Retin-A, the acne medication, with James Fulton in 1969. Kligman is known for the medical experiments he performed on inmates at Holmesburg Prison in Philadelphia, and the resulting scandal that followed years later. The experiments intentionally exposed humans to pathogens and the ....