( ( ( Polyclonal ( antibody characterization ) ) ( of ( Babesia caballi ) ) ) ( antigens . ) )
(ROOT (S (NP (NP (JJ Polyclonal) (NN antibody) (NN characterization)) (PP (IN of) (NP (NNP Babesia) (NNS caballi)))) (VP (VBZ antigens)) (. .)))
Polyclonal antibody characterization of Babesia caballi antigens.
(ROOT (S (NP (DT An) (NN animal)) (VP (VBZ produces) (NP (JJ polyclonal) (NNS antibodies)) (PP (IN after) (NP (NP (NN exposure)) (PP (TO to) (NP (DT a) (JJ microbial) (NN antigen)))))) (. .)))