( Hormones ( ( ( travel mostly ) ( through ( circulatory system ) ) ) . ) )
(ROOT (S (NP (NNS Hormones)) (VP (VBP travel) (ADVP (RB mostly)) (PP (IN through) (NP (JJ circulatory) (NN system)))) (. .)))
Hormones travel mostly through circulatory system.
(ROOT (S (NP (NNS Hormones)) (ADVP (RB generally)) (VP (VBP travel) (PP (IN through) (NP (NP (DT the) (JJ circulatory) (NN system) (NN system)) (PP (IN of) (NP (DT the) (NN body)))))) (. .)))