( Antibody ( ( a protein ) ( ( ( ( produced ( by ( the body ) ) ) , ) ( in ( response ( to ( ( ( a ( foreign substance ) ) , ) ( that ( fights ( the ( invading organism ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Antibody)) (NP (DT a) (NN protein)) (VP (VBD produced) (PP (IN by) (NP (DT the) (NN body))) (, ,) (PP (IN in) (NP (NP (NN response)) (PP (TO to) (NP (NP (DT a) (JJ foreign) (NN substance)) (, ,) (SBAR (WHNP (WDT that)) (S (VP (VBZ fights) (NP (DT the) (JJ invading) (NN organism)))))))))) (. .)))
Antibody a protein produced by the body, in response to a foreign substance, that fights the invading organism.
(ROOT (S (NP (NNS Antibodies)) (VP (VBZ bind) (PP (TO to) (NP (NP (JJ foreign) (NNS substances)) (CC and) (NP (NN attempt) (NN destruction))))) (. .)))