( ( In ( liver cells ) ) ( ( the ( smooth ER ) ) ( ( produces ( enzymes ( that ( help ( to ( detoxify ( certain compounds ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (NN liver) (NNS cells))) (NP (DT the) (JJ smooth) (NN ER)) (VP (VBZ produces) (NP (NP (NNS enzymes)) (SBAR (WHNP (WDT that)) (S (VP (VBP help) (S (VP (TO to) (VP (VB detoxify) (NP (JJ certain) (NNS compounds)))))))))) (. .)))
In liver cells the smooth ER produces enzymes that help to detoxify certain compounds.
(ROOT (S (NP (NNP Glutathione)) (VP (VBZ is) (NP (NP (DT a) (JJ low-molecular-weight) (NN compound)) (VP (VBN found) (PP (IN in) (NP (VBG living) (NNS cells)))) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN produced) (ADVP (RB naturally)) (PP (IN by) (NP (DT the) (NN liver))))))))) (. .)))