金山科研平台，产品价格货期咨询微信：jinshanbio Molecule Information: B220/CD45R Long Name: Cluster of Differentiation 45 Aliases: CD45R Entrez Gene IDs: 5788 (Human); 19264 (Mouse); 24699 (Rat) Background: B220/CD45R B220 antigens represent a subset of mouse CD45 isoforms predominantly expressed on all B lymphocytes, including pro-, mature and activated B cells. The level of B220 antigen expression on the B cell lineage is developmentally regulated and this antibody is commonly used as a B cell marker.