BACKGROUND OF THE INVENTION
Platelet-activating factor (PAF) has recently been identified as an acetyl glyceryl ether phosphorylcholine (AGEPC), i.e., 1O-hexadecyl/octadecyl-2-O-acetyl-sn-glyceryl-3-phosphorylcholine (Hanahan, D. S. et al., J. Biol. Chem., 255:5514, 1980). Even before its chemical