( ( The ( thyroid gland ) ) ( ( combines ( ( ( the ( amino acid ) ) ( ( tyrosine and ) iodine ) ) ( to ( manufacture ( the ( thyroid hormone ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN thyroid) (NN gland)) (VP (VBZ combines) (S (NP (NP (DT the) (JJ amino) (NN acid)) (ADJP (JJ tyrosine) (CC and) (JJ iodine))) (VP (TO to) (VP (VB manufacture) (NP (DT the) (NN thyroid) (NN hormone)))))) (. .)))
The thyroid gland combines the amino acid tyrosine and iodine to manufacture the thyroid hormone.
(ROOT (S (NP (NNS Catecholamines)) (VP (VBP are) (NP (NP (DT a) (NN class)) (PP (IN of) (NP (JJ amine) (NNS hormones))) (SBAR (WHNP (WHNP (DT that)) (NP (WRB when) (JJ synthesised))) (S (VP (VBP form) (NP (DT the) (JJ amino) (NN acid) (NN tyrosine))))))) (. .)))