has characterizing marker set has marker component CD27 CD14 CD19 CR2 PDPN HLA-A HLA-B HLA-C HLA-DRA IGHM MS4A1 PDCD1 germinal center B cell sequence collection palatine tonsil germinal center tonsil germinal center Cell Type germinal center b cell cd21 true germinal center b cell cd21 ASCTB-TEMP:germinal-center-b-cell-cd21 This term is a temporary placeholder based on expert recommendation and it is NOT in a stable version CT tonsil follicle tonsil secondary follicle