David Kaplan, of Ashland, Mass., a professor emeritus of anthropology who taught at Brandeis for 36 years, died on Dec. 12, 2012. He also served as chair of the anthropology department and dean of the Graduate School of Arts and Sciences. He leaves his wife, Carol; two sons, Michael and Paul; his brother, Sol; and five grandchildren. John Lowenstein of Wellesley, Mass., a professor emeritus of biochemistry who taught at Brandeis for 50 years, died on Nov. 3, 2012. He studied the function of the HINT (histidine triad nucleotide-binding) protein, a small regulatory protein that occurs in all forms of life. He leaves his wife, Carmia; three sons, Charles, Andrew and Marc; and 11 grandchildren. Pieter Croissant Wensink, of Wellesley, Mass., a professor emeritus of biochemistry at Brandeis, died on Oct. 2, 2012. After attending Lawrence College in Appleton, Wis., and working in a Johns Hopkins University laboratory, he discovered a passion for science. He earned his PhD in biology from Hopkins and did three years of postdoctoral study at Stanford. After retiring from teaching due to health reasons, Pieter took up painting and studied at the Massachusetts College of Art, receiving his BFA with distinction in painting. He leaves his wife, Dorothy; three sons, Tom, Joe and Alan; his sister, Johanna; and three grandchildren.