Bce Microbial B cell recognition protein of native protein antigen antigen Receptor-mediated endocytosis of antigen Ag presentation by B cellls to th cels Cass‖l MHC-peptide complex Antigen processing and presentation CD4+ T cell T cell recognition of antigen CD28 ElsevierAbbas&LichtmanBasicImmunologyUpdated2e-www.studentconsult.comAg presentation by B cells to Th cells