( ( Phospholipids ( containing choline ) ) ( ( promote ( ( lipid transport ) ( in ( cell membranes ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Phospholipids)) (VP (VBG containing) (NP (NN choline)))) (VP (VBP promote) (NP (NP (NN lipid) (NN transport)) (PP (IN in) (NP (NN cell) (NNS membranes))))) (. .)))
Phospholipids containing choline promote lipid transport in cell membranes.
(ROOT (S (NP (NNS Phospholipids)) (VP (VBP are) (NP (NP (DT the) (JJ main) (NN component)) (PP (IN of) (NP (DT the) (NN cell) (NN membrane))))) (. .)))