phospholipid PHOSPHATIDYLCHOLINE CH2- CH的 CHOLINE CH2 0 0-P-0 PHOSPHATE 0 CH2-CH-CH2 GLYCEROL 0 C=0c=0 FATTY ACIDS Hydrophilic head Hydrophobic tails (a)Structural formula (b)Space-filling model (c)Phospholipid symbol 1000 Addcon Wesley Lopgman ine.phospholipid