1R20 antibody, B cell activation protein BL34 antibody, B-cell activation protein BL34 antibody, BL34 antibody, Early response protein 1R20 antibody, IER 1 antibody, IER1 antibody, Immediate early response 1 B cell specific antibody, immediate-early response 1, B-cell specific antibody, IR20 antibody, Regulator of G protein signalling 1 antibody, Regulator of G-protein signaling 1 antibody, RGS 1 antibody, RGS1 antibody, RGS1_HUMAN antibody