( ( ( ( ( ( ( Low amounts ) ( of ( ( many ( ` ( poisons ' ) ) ) ( in ( the ( right cells ) ) ) ) ) ) ( ( are actually ) ( necessary ( for life ) ) ) ) , ) and ) ( ( all ( ( vitamins and ) minerals ) ) ( are ( toxic ( above ( certain levels ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (NNP Low) (NNS amounts)) (PP (IN of) (NP (NP (JJ many) (`` `) (NNS poisons) ('' ')) (PP (IN in) (NP (DT the) (JJ right) (NNS cells)))))) (VP (VBP are) (ADVP (RB actually)) (ADJP (JJ necessary) (PP (IN for) (NP (NN life)))))) (, ,) (CC and) (S (NP (DT all) (NNS vitamins) (CC and) (NNS minerals)) (VP (VBP are) (ADJP (JJ toxic) (PP (IN above) (NP (JJ certain) (NNS levels)))))) (. .)))
Low amounts of many 'poisons' in the right cells are actually necessary for life, and all vitamins and minerals are toxic above certain levels.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN cell)) (VP (VBZ is) (NP (NP (DT the) (JJS lowest) (NN level)) (PP (IN of) (NP (NN organism))) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB perform) (NP (NP (DT all) (NNS activities)) (VP (VBN required) (PP (IN for) (NP (NN life))))))))))) (. .)))