( ( ( The ( body 's ) ) ( immune system ) ) ( ( has ( many ( mechanisms ( to ( defend ( against ( ( ( ( unwanted ( foreign substances ) ) ( -LRB- ( ( ( ( ( ( ( viruses , ) bacteria ) , ) ( cancer cells ) ) , ) etc. ) -RRB- ) ) ) , ) ( including ( antibodies ( that ( ( ( recognize and ) destroy ) ( the substances ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN body) (POS 's)) (JJ immune) (NN system)) (VP (VBZ has) (NP (JJ many) (NNS mechanisms) (S (VP (TO to) (VP (VB defend) (PP (IN against) (NP (NP (JJ unwanted) (JJ foreign) (NNS substances)) (PRN (-LRB- -LRB-) (NP (NP (NP (NNS viruses)) (, ,) (NP (NNS bacteria))) (, ,) (NP (NN cancer) (NNS cells)) (, ,) (FW etc.)) (-RRB- -RRB-)) (, ,) (PP (VBG including) (NP (NP (NNS antibodies)) (SBAR (WHNP (WDT that)) (S (VP (VBP recognize) (CC and) (VBP destroy) (NP (DT the) (NNS substances)))))))))))))) (. .)))
The body's immune system has many mechanisms to defend against unwanted foreign substances (viruses, bacteria, cancer cells, etc.), including antibodies that recognize and destroy the substances.
(ROOT (S (NP (DT The) (JJ immune) (NN system)) (ADVP (RB typically)) (VP (VP (VBZ recognizes)) (, ,) (VP (VBZ attacks)) (, ,) (CC and) (VP (VBZ destroys) (NP (NP (JJ foreign) (NNS cells) (CC or) (NNS substances)) (SBAR (WHNP (WDT that)) (S (VP (MD may) (VP (VB cause) (NP (NN disease))))))))) (. .)))
The immune system typically recognizes, attacks, and destroys foreign cells or substances that may cause disease.