To obtain solube VCAM-1 (sVCM-1) concentration from APS subjects subject sera exposed to the culture of human umbilical cord endothel to demonstrate whether there is a role of endothelial activation in the thrombotic events in APS (antiphospholipid) patient. An in vitro experimental research carried out in Makmal Terpadu Imunondokrinologi/FKUI in 2003. Faurteen serum samples of each groups. AP…