( ( Thyroid hormone ) ( ( is ( produced ( using ( ( ( phenalaline and ) tyrosine ) ( which ( are ( amino acids ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Thyroid) (NN hormone)) (VP (VBZ is) (VP (VBN produced) (S (VP (VBG using) (NP (NP (NN phenalaline) (CC and) (NN tyrosine)) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (NP (JJ amino) (NNS acids)))))))))) (. .)))
Thyroid hormone is produced using phenalaline and tyrosine which are amino acids.
(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))))))) (. .)))