( ( ( ( Comes ( from mesoderm ) ) , ) ( in ( dermis ( of skin ) ) ) ) . )
(ROOT (S (VP (VBZ Comes) (PP (IN from) (NP (NN mesoderm))) (, ,) (PP (IN in) (NP (NP (NNS dermis)) (PP (IN of) (NP (NN skin)))))) (. .)))
Comes from mesoderm, in dermis of skin.
(ROOT (S (NP (JJS Most) (NN skin) (NNS structures)) (VP (VB originate) (PP (IN in) (NP (DT the) (NNS dermis)))) (. .)))