Clonal relationship of the lymphoblastic cell line P388 to the macrophage cell line P388D1 as evidenced by immunoglobulin gene rearrangements and expression of cell surface antigens.

A lymphocytic tumor of early B cell lineage, P388, and a mature macrophage tumor, P388D1, appear to have been derived from a common precursor based on identical immunoglobulin gene rearrangements and shared cell surface antigens. These cell lines may have resulted from differential maturation of a transformed cell that is an immediate cellular precursor to both the B cell and myeloid lineages. This supports earlier findings that suggest a close relationship between early B cell and myeloid differentiation pathways.