( ( The ( ( abnormally shaped ) cells ) ) ( ( ( ( block ( the capillaries ) ) and ) ( prevent ( proper ( blood flow ) ) ) ) . ) )
(ROOT (S (NP (DT The) (ADJP (RB abnormally) (JJ shaped)) (NNS cells)) (VP (VP (VB block) (NP (DT the) (NNS capillaries))) (CC and) (VP (VB prevent) (NP (JJ proper) (NN blood) (NN flow)))) (. .)))
The abnormally shaped cells block the capillaries and prevent proper blood flow.
(ROOT (S (NP (DT The) (JJ abnormal) (NNS cells)) (VP (VP (MD can) (RB not) (VP (VB carry) (NP (NN oxygen)) (ADVP (RB properly)))) (CC and) (VP (MD can) (VP (VB get) (VP (VBN stuck) (PP (IN in) (NP (NNS capillaries))))))) (. .)))