Positive cellular localization: cell membrane
CD19 is expressed in normal B cells, tumor B cells and follicular dendritic cells specifically. In normal tissues, CD19 is expressed throughout the development of B cell line, but down regulated during the terminal differentiation of plasma cells. CD19 is highly conserved in most B cell tumors.
Formalin-fixed, paraffin-embedded (FFPE) Human Lymph node tissue with CD19 Monoclonal Antibody.