( ( Admitted ( to ( Stanford Hospital ) ) ) ( , ( he ( ( underwent ( ( hemodialysis , ) ( which ( ( purifies blood ) ( by ( ( cycling it ) ( through ( ( an ( artificial ( kidney machine ) ) ) ( called ( a dialyzer ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (VBN Admitted) (PP (TO to) (NP (NNP Stanford) (NNP Hospital))))) (, ,) (NP (PRP he)) (VP (VBD underwent) (NP (NP (NNS hemodialysis)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ purifies) (NP (NN blood)) (PP (IN by) (S (VP (VBG cycling) (NP (PRP it)) (PP (IN through) (NP (NP (DT an) (JJ artificial) (NN kidney) (NN machine)) (VP (VBN called) (NP (DT a) (NN dialyzer))))))))))))) (. .)))
Admitted to Stanford Hospital, he underwent hemodialysis, which purifies blood by cycling it through an artificial kidney machine called a dialyzer.
(ROOT (S (NP (NNS Hemodialysis)) (VP (VBZ has) (NP (NP (NP (DT a) (NN patient) (POS 's)) (NN blood) (NN pass)) (PP (IN through) (NP (NP (DT a) (NN length)) (PP (IN of) (S (VP (VBG tubing) (SBAR (IN that) (S (VP (VBZ travels) (PP (IN through) (NP (DT an) (JJ artificial) (NN kidney) (NN machine))))))))))))) (. .)))
Hemodialysis has a patient’s blood pass through a length of tubing that travels through an artificial kidney machine.