( ( ( ( ( These antibodies ) ( are ( configured ( in ( ( a ( sandwich ( type assay ) ) ) ( ( in which ) ( ( one antibody ) ( ( captures ( the antigen ) ) ( to ( a ( solid phase ) ) ) ) ) ) ) ) ) ) ) and ) ( ( the ( second antibody ) ) ( is ( used ( as ( ( a tracer ) ( -LRB- ( ( ( ( van Kamp ) , ) 1996 ) -RRB- ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT These) (NNS antibodies)) (VP (VBP are) (VP (VBN configured) (PP (IN in) (NP (NP (DT a) (NN sandwich) (NN type) (NN assay)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (CD one) (NN antibody)) (VP (VBZ captures) (NP (DT the) (NN antigen)) (PP (TO to) (NP (DT a) (JJ solid) (NN phase))))))))))) (CC and) (S (NP (DT the) (JJ second) (NN antibody)) (VP (VBZ is) (VP (VBN used) (PP (IN as) (NP (NP (DT a) (NN tracer)) (PRN (-LRB- -LRB-) (NP (NNP van) (NNP Kamp)) (, ,) (NP (CD 1996)) (-RRB- -RRB-))))))) (. .)))
These antibodies are configured in a sandwich type assay in which one antibody captures the antigen to a solid phase and the second antibody is used as a tracer (van Kamp, 1996).
(ROOT (S (NP (DT An) (NN antibody)) (VP (MD can) (VP (VB match) (NP (NP (CD one) (NNS types)) (PP (IN of) (NP (NNS antigens)))))) (. .)))