( ( This ( GPI-anchored ( plasma ( membrane protein ) ) ) ) ( normally ( ( serves ( to ( ( ( protect ( blood ( and ( vascular cells ) ) ) ) ( from injury ) ) ( by ( ( the ( ( C5b-9 membrane ) ( attack complex ) ) ) ( of complement ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT This) (JJ GPI-anchored) (NN plasma) (NN membrane) (NN protein)) (ADVP (RB normally)) (VP (VBZ serves) (S (VP (TO to) (VP (VB protect) (NP (NN blood) (CC and) (NN vascular) (NNS cells)) (PP (IN from) (NP (NN injury))) (PP (IN by) (NP (NP (DT the) (ADJP (JJ C5b-9) (JJ membrane)) (NN attack) (NN complex)) (PP (IN of) (NP (NNP complement))))))))) (. .)))
This GPI-anchored plasma membrane protein normally serves to protect blood and vascular cells from injury by the C5b-9 membrane attack complex of complement.
(ROOT (S (NP (DT The) (JJ complement) (NN system)) (VP (VBZ is) (NP (NP (DT a) (NN series)) (PP (IN of) (NP (NP (NNS proteins)) (VP (ADVP (RB constitutively)) (VBN found) (PP (IN in) (NP (DT the) (NN blood) (NN plasma)))))))) (. .)))