CD19 MicroBeads by Miltenyi Biotec B.V. & Co. KG
CD19 MicroBeads were developed for direct magnetic isolation of CD19+ B cells. As a B cell lineage marker, the CD19 antigen is expressed from the early pro-B cell stage to the B cell lymphoblast stage, but the expression is down-regulated upon B cell maturation to plasma cells. The CD19 antigen is further expressed on most malignant B cells and on a subset of follicular dendritic cells.