( ( Organs ( usually affected ) ) ( ( ( are ( the ( skin ( , ( lungs ( , ( ( central nervous ) system ) ) ) ) ) ) ) ( while ( ( ( liver and ) kidney ) ( are ( affected ( to ( lesser extent ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Organs)) (VP (ADVP (RB usually)) (VBN affected))) (VP (VBP are) (NP (DT the) (NN skin) (, ,) (NNS lungs) (, ,) (ADJP (JJ central) (JJ nervous)) (NN system)) (SBAR (IN while) (S (NP (NN liver) (CC and) (NN kidney)) (VP (VBP are) (VP (VBN affected) (PP (TO to) (NP (JJR lesser) (NN extent)))))))) (. .)))
Organs usually affected are the skin, lungs, central nervous system while liver and kidney are affected to lesser extent.
(ROOT (S (NP (NP (NNS Kidneys)) (, ,) (NP (JJ large) (NN intestine)) (, ,) (NP (NN liver)) (, ,) (NP (NN skin)) (, ,) (CC and) (NP (NNS lungs))) (VP (VBP comprise) (NP (DT the) (JJ excretory) (NN system))) (. .)))