Sandifer, Mark L. SAN DIEGO -- Mark L. Sandifer, 56, died suddenly on Thursday, January 23, 2014 in Seattle. He was born January 16, 1958, in Pamona to Joanne (Sandifer) Irvin and Laurence Sandifer. After 22 years together, he and his spouse, Doug Petrie, were able to marry in San Diego in 2008. Mark graduated from Grossmont High School in La Mesa in 1976, and received a BA in linguistics from SDSU in 1983, which led to an initial career as an ESL teacher in Saudi Arabia and researcher/writer of textbooks in Newburyport, MA and Alexandria, VA. His yearning for science drew him to work at the Bone Marrow Donor Program at Georgetown University in Washington, DC, while he earned a BS in Biology from George Mason University in 1997 and a MS in Biotechnology from Johns Hopkins University in 2002. After moving to Seattle in 2006, Mark worked with Nastech Pharmaceutical and most recently with Biolife Solutions. A devoted husband, son, uncle, and friend, Mark leaves Doug; his parents, Joanne and Larry; siblings, Laurie, Linda, Lisa, and Scott; other relatives; and scores of friends and colleagues. A memorial service will be held in February. In lieu of flowers, donations can be made to the American Foundation for Suicide Prevention.