PR:000001289 membrane-spanning 4-domains subfamily A member 1 B-cell differentiation antigen Ly-44|B-cell surface antigen CD20|B-lymphocyte antigen CD20|B-lymphocyte surface antigen B1|Bp35|CD20|leukocyte surface antigen Leu-16|Ly-44|lymphocyte antigen 44|MS4A1|Ms4a2 has_part Pfam:PF04103 CD20-like family PIRSF:PIRSF001995 ISS PIRSF:PIRSF001995 PIRSF:PIRSF001995 20090326 PRO:CNA