( ( In ( the capillaries ) ) ( , ( ( the oxygen ) ( ( is ( released ( to ( be ( used ( by ( ( the cells ) ( of ( the body ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (NNS capillaries))) (, ,) (NP (DT the) (NN oxygen)) (VP (VBZ is) (VP (VBN released) (S (VP (TO to) (VP (VB be) (VP (VBN used) (PP (IN by) (NP (NP (DT the) (NNS cells)) (PP (IN of) (NP (DT the) (NN body))))))))))) (. .)))
In the capillaries, the oxygen is released to be used by the cells of the body.
(ROOT (S (NP (DT The) (JJ abnormal) (NNS cells)) (VP (VP (MD can) (RB not) (VP (VB carry) (NP (NN oxygen)) (ADVP (RB properly)))) (CC and) (VP (MD can) (VP (VB get) (VP (VBN stuck) (PP (IN in) (NP (NNS capillaries))))))) (. .)))