( ( As ( ( ( recent experiences ) ( with ( human ( heart transplants ) ) ) ) ( have shown ) ) ) ( , ( ( this organ ) ( ( can ( ( function perfectly ) ( without ( ( the help ) ( of ( the ( nervous system ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN As) (S (NP (NP (JJ recent) (NNS experiences)) (PP (IN with) (NP (JJ human) (NN heart) (NNS transplants)))) (VP (VBP have) (VP (VBN shown))))) (, ,) (NP (DT this) (NN organ)) (VP (MD can) (VP (VB function) (ADVP (RB perfectly)) (PP (IN without) (NP (NP (DT the) (NN help)) (PP (IN of) (NP (DT the) (JJ nervous) (NN system))))))) (. .)))
As recent experiences with human heart transplants have shown, this organ can function perfectly without the help of the nervous system.
(ROOT (S (PP (IN In) (NP (NNS humans))) (, ,) (NP (DT the) (NN heart)) (VP (VBZ is) (NP (DT the) (JJ first) (NN organ) (S (VP (TO to) (VP (VP (VB form)) (CC and) (VP (VB become) (ADJP (JJ functional)))))))) (. .)))