Binding of APRIL (mouse) to BCMA is inhibited by anti-APRIL (mouse), mAb (rec.) (blocking) (APRY-1-1). BCMA:Fc was coated on an ELISA plate at 1ug /ml. anti-APRIL (mouse) mAb (rec.) (blocking) (APRY-1-1) or an unrelated mAb (recombinant) (Negative control) were added (starting at 50ug/ml with a twofold serial dilution) together with 0.1ug /ml of MegaAPRIL (mouse). After incubation for 1 h at RT, the MegaAPRIL (mouse) binding was detected using an anti-FLAG antibody (HRP). The percentage of binding is shown.