. . "Phosphatidylcholine" . . . . . "phosphatidylcholine" . "PC" . . . . "EPC" . "HSPC" . . "phosphatidylcholine (PC)" . . "phosphatidyl choline" . "Phosphatidylcholine" . "phosphatidylcholines" . "dioleoyl phosphatidylcholine" . "phosphatidylserine" . "choline" . "Phosphatidyl choline" . .