part of part of lacks_plasma_membrane_part has plasma membrane part mature B cell B-2 B cell Peyer's patch B cell 2010-10-05T11:18:03Z Peyers patch B cell A resting mature B cell within the Peyer's patch that is CD19-positive, B220-positive, IgM-positive, AA4-negative, CD23-positive, CD43-negative, and CD5-negative. Peyer's patch lymphocyte IgM immunoglobulin complex receptor-type tyrosine-protein phosphatase C isoform CD45RABC membrane-spanning 4-domains subfamily A member 1 complement receptor type 2 T-cell surface glycoprotein CD5 leukosialin complement component C1q receptor Peyer's patch