nh&wook,methinks "unblocking" is the key concept, and "upregulating." Apparently flipped PS on cell membrane acts as a shield for cancers/viruses, allowing them to multiply relatively unmolested by an effective immune response. Bavi (anti-PS) attaches to flipped PS and opens the gate that PS is blocking. There are other immunostimulatory events at work too, one of which is apparent "priming" of an sluggish immune response to a given virus which is probably what causes the increased secondary exposure response. With that model in mind, it is easy to see how an oncovirus can gain a foothold. RX: Bavi in your coffee qd in am.