various components of the phosphatidylcholine molecule , and other lipids including the closely-related molecule dipalmitoyl phosphatidyl-dimethyl-ethanolamine which is identical to dipalmitoyl phosphatidylcholine , except for the absence of a ch2 group on the polar head group , did not inhibit lysis by the autoantibodies .
C1959616
phosphatidylcholine
C0000039
dipalmitoyl