( ( In ( addition ( to ( the ( innate ( immune system ) ) ) ) ) ) ( , ( vertebrates ( also ( ( possess ( ( a ( ( more sophisticated ) ( , ( ( adaptive immune ) system ) ) ) ) ( ( whose components ) ( include ( ( ( ( ( antibodies , ) B-cells ) , ) and ) T-cells ) ) ) ) ) . ) ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (NN addition)) (PP (TO to) (NP (DT the) (JJ innate) (JJ immune) (NN system))))) (, ,) (NP (NNS vertebrates)) (ADVP (RB also)) (VP (VBP possess) (NP (NP (DT a) (ADJP (RBR more) (JJ sophisticated)) (, ,) (ADJP (JJ adaptive) (JJ immune)) (NN system)) (SBAR (WHNP (WP$ whose) (NNS components)) (S (VP (VBP include) (NP (NP (NNS antibodies)) (, ,) (NP (NNP B-cells)) (, ,) (CC and) (NP (NNP T-cells)))))))) (. .)))
In addition to the innate immune system, vertebrates also possess a more sophisticated, adaptive immune system whose components include antibodies, B-cells, and T-cells.
(ROOT (S (NP (NNS Vertebrates)) (VP (VBP are) (ADJP (JJ unique) (PP (IN in) (S (VP (VBG having) (S (NP (NP (JJ adaptive) (NN immunity)) (PP (IN in) (NP (NN addition)))) (VP (TO to) (VP (VB innate) (NP (NN immunity)))))))))) (. .)))