lacks_plasma_membrane_part has plasma membrane part in taxon has low plasma membrane amount pro-B cell fraction A pre-pro B cell 2010-04-28T10:50:07Z Markers associated with mouse cells. fraction A pre pro B cell A pro-B cell that is CD45R/B220-positive, CD43-positive, HSA-low, BP-1-negative and Ly6c-negative. This cell type is also described as being lin-negative, AA4-positive, Kit-positive, IL7Ra-positive and CD45R-positive. Mus musculus receptor-type tyrosine-protein phosphatase C isoform CD45RA leukosialin signal transducer CD24 complement component C1q receptor glutamyl aminopeptidase mast/stem cell growth factor receptor lymphocyte antigen 6C2