( ( Monoclonal ( ( Antibodies or ) MAb ) ) ( ( ( An antibody ) that ) ( ( recognizes ( ( only ( one type ) ) ( of antigen ) ) ) . ) ) )
(ROOT (S (NP (NNP Monoclonal) (NNP Antibodies) (CC or) (NNP MAb)) (ADVP (NP (DT An) (NN antibody)) (RB that)) (VP (VBZ recognizes) (NP (NP (RB only) (CD one) (NN type)) (PP (IN of) (NP (NN antigen))))) (. .)))
Monoclonal Antibodies or MAb An antibody that recognizes only one type of antigen.
(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)))))) (. .)))