( It ( ( ( involves ( investigation ( of ( cells ( , ( tissues ( , ( ( organs and ) systems ) ) ) ) ) ) ) ) ( -LRB- ( ( including ( the ( skeletal ( , ( muscular ( , ( nervous ( , ( endocrine ( , ( circulatory ( , ( respiratory ( , ( digestive ( , ( renal ( and ( reproductive systems ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) -RRB- ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ involves) (NP (NP (NN investigation)) (PP (IN of) (NP (NNS cells) (, ,) (NNS tissues) (, ,) (NNS organs) (CC and) (NNS systems)))) (PRN (-LRB- -LRB-) (S (VP (VBG including) (S (NP (DT the) (JJ skeletal) (, ,) (JJ muscular) (, ,) (JJ nervous) (, ,) (JJ endocrine) (, ,) (JJ circulatory) (, ,) (JJ respiratory) (, ,) (JJ digestive) (, ,) (JJ renal) (CC and) (JJ reproductive) (NNS systems))))) (-RRB- -RRB-))) (. .)))
It involves investigation of cells, tissues, organs and systems (including the skeletal, muscular, nervous, endocrine, circulatory, respiratory, digestive, renal and reproductive systems).
(ROOT (S (NP (NP (NNS Examples)) (PP (IN of) (NP (NP (NN organ) (NNS systems)) (PP (IN in) (NP (DT a) (NN human)))))) (VP (VBP include) (NP (NP (DT the) (NN skeletal)) (, ,) (ADJP (JJ nervous)) (, ,) (CC and) (NP (JJ reproductive) (NNS systems)))) (. .)))