Seymour Jonathan Singer

S. Jonathan Singer is a cell biologist and professor at the University of California, San Diego. He worked as a postdoctoral fellow in the lab of Linus Pauling at Cal Tech, where he co-discovered the basis of abnormal hemoglobin in sickle-cell anemia. In 1951, he became an assistant professor at Yale, where he developed the ferritin-antibody, which was the first electron-dense reagent used for cell staining in electron microscopy imaging. In 1961 he joined the faculty at UCSD. He then began to work on membrane proteins and aided in the development of the "Fluid Mosaic Model" of the cell membrane. He later studied the cytoskeleton. In 2001, he published a book, "The Splendid Feast of Reason", regarding rationalism and the philosophy of science.