Poorgrad, if you have the time & desire, listen to the replays of these 5 researchers at the 5-1-12 NYAS “Phosphatidylserine (PS) Asymmetry - Therapeutic Applications in Cancer & Infectious Disease Symposium in NYC. Of the 5, prioritize to Dr. Alan Schroit (MDA/UTSW - the master of cellular membrane expression) and Dr. Phillip Thorpe (UTSW - the inventor of PS-targeting therapeutics, including Peregrine’s Bavituximab).
They’re all good, but the Thorpe & Schroit talks will cram your brain full and answer all your questions about "PS exposure, its biological consequences, and its exploitation to create novel agents for the detection and treatment of cancer & viral diseases", I think.