( ( The ( ceIIuIar ( signal ( transduction system ) ) ) ) ( ( consists ( of ( ( function ( protein cascades ) ) ( ( arising ( from ( reception ( of ( extracellular signals ) ) ) ) ) ( ( leading ( to ( eventual ( cellular responses ) ) ) ) ( to them ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ ceIIuIar) (NN signal) (NN transduction) (NN system)) (VP (VBZ consists) (PP (IN of) (NP (NP (NN function) (NN protein) (NNS cascades)) (VP (VBG arising) (PP (IN from) (NP (NP (NN reception)) (PP (IN of) (NP (NN extracellular) (NNS signals))))) (S (VP (VBG leading) (PP (TO to) (NP (JJ eventual) (JJ cellular) (NNS responses))) (PP (TO to) (NP (PRP them))))))))) (. .)))
The ceIIuIar signal transduction system consists of function protein cascades arising from reception of extracellular signals leading to eventual cellular responses to them.
(ROOT (S (NP (JJ Enzymatic) (NNS cascades)) (VP (VBP help) (VP (VB amplify) (NP (NP (DT the) (NNS effects)) (PP (IN of) (NP (NN extracellular) (NNS signals)))))) (. .)))