( It ( ( ( is generally ) ( accepted ( that ( tumours ( secrete ( ( a ( growth factor ) ) ( which ( ( binds ( to ( ( the ( corresponding receptor ) ) ( on ( ( the surface ) ( of ( endothelial cells ) ) ) ) ) ) ) ( lining ( the ( blood vessels ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (ADVP (RB generally)) (VP (VBN accepted) (SBAR (IN that) (S (NP (NNS tumours)) (VP (VBP secrete) (NP (NP (DT a) (NN growth) (NN factor)) (SBAR (WHNP (WDT which)) (S (VP (VBZ binds) (PP (TO to) (NP (NP (DT the) (JJ corresponding) (NN receptor)) (PP (IN on) (NP (NP (DT the) (NN surface)) (PP (IN of) (NP (JJ endothelial) (NNS cells))))))) (S (VP (VBG lining) (NP (DT the) (NN blood) (NNS vessels))))))))))))) (. .)))
It is generally accepted that tumours secrete a growth factor which binds to the corresponding receptor on the surface of endothelial cells lining the blood vessels.
(ROOT (S (NP (NNS Cells)) (VP (VBP secrete) (VP (VB factor) (NP (DT that) (NN bind)) (PP (TO to) (NP (NNS receptors))))) (. .)))