“…Four complement-fixing murine MAbs to PIP, selected for their abilities to react with liposomes containing PIP but not with liposomes lacking PIP, have been extensively studied (2,3,6,16,17,30,32,33). The anti-PIP antibodies are characterized by the ability to react with various types of phosphorylated molecules, including certain closely related anionic phospholipids that have charged nonzwitterionic phosphate groups, such as CL (2), and also with denatured DNA (30).…”