Lina Solomonova Stern (1878-1968), 1929, Smithsonian Institution Archives, Biochemist Lina Solomonova Stern (1878-1968), professor of physiology at the University of Moscow, did pioneering work on the blood-brain barrier. This photograph was distributed when she attended the Ninth International Congress of Psychology, New Haven, Connecticut, September 2-7, 1929..