( ( Discuss ( ( the ( life ( cycle ( and ( life span ) ) ) ) ) ( of platelets ) ) ) . )
(ROOT (NP (NP (NNS Discuss)) (NP (NP (DT the) (NN life) (NN cycle) (CC and) (NN life) (NN span)) (PP (IN of) (NP (NNS platelets)))) (. .)))
Discuss the life cycle and life span of platelets.
(ROOT (S (NP (NNP Life) (NN cycle)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (NN span)) (PP (IN in) (NP (NP (DT the) (NN life)) (PP (IN of) (NP (NP (DT an) (NN organism)) (PP (IN from) (NP (NP (CD one) (NN generation)) (PP (TO to) (NP (DT the) (JJ next))))))))))))) (. .)))