The CD19 antigen (95kDa) is expressed from the earliest stage of B progenitor development, on all peripheral B cells including germinal centre B cells, and all B cell lines and B cell leukaemia tested. T cell and monocytic cell lines are negative and the antigen is lost on B cell maturation to plasma cells. The antigen is a type I integral membrane glycoprotein whose in vitro inhibition will influence B cell activation and proliferation.

Aliases ：   B4; MGC12802    

Entrez GeneID：    930    

Swissprot：    P15391    

WB Predicted band size：    61kDa    

Host/Isotype ：   Mouse IgG2b    

Species Reactivity：    Human    

Immunogen：    Purified recombinant fragment of human CD19 expressed in E. Coli.    

IF/ICC    1/200 - 1/1000    

FCM    1/200 - 1/400    

ELISA    1/10000