( ( ( Cell invasion ) ( by Theileria ) ) ( sporozoites . ) )
(ROOT (S (NP (NP (JJ Cell) (NN invasion)) (PP (IN by) (NP (NNP Theileria)))) (VP (VBZ sporozoites)) (. .)))
Cell invasion by Theileria sporozoites.
(ROOT (S (NP (NNS Sporozoites)) (VP (VBP are) (NP (NP (DT the) (NNS cells)) (VP (VBN caused) (SBAR (IN that) (S (NP (NNS parasites)) (VP (VBD spread) (PP (IN through) (NP (PRP$ their) (NN host))))))))) (. .)))