Definitions of B Cell Proliferating Factor

  1.   Soluble factor produced by activated T lymphocytes that causes proliferation and differentiation of B cells Interleukin 4 induces the expression of class II major histocompatibility complex and Fc receptors on B cells It also acts on T lymphocytes mast cell lines and several other hematopoietic lineage cells including granulocyte megakaryocyte and erythroid precursors as well as macrophages