( ( ( Each type ) ( of ( B cell ) ) ) ( ( makes ( ( ( one ( specific antibody ) ) , ) ( which ( recognizes ( one ( specific antigen ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Each) (NN type)) (PP (IN of) (NP (NNP B) (NN cell)))) (VP (VBZ makes) (NP (NP (CD one) (JJ specific) (NN antibody)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ recognizes) (NP (CD one) (JJ specific) (NN antigen))))))) (. .)))
Each type of B cell makes one specific antibody, which recognizes one specific 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)))))) (. .)))