faktor rastový I, pre B-lymfocyty faktor rastový I, pre B-bunky faktor-1 stimulujúci B-bunky binetrakín IL-4 faktor rastový 2, pre mastocyty faktor rastový 2, pre žírne bunky faktor rastový 2, mastocytov faktor rastový 2, žírnych buniek
A soluble factor produced by activated T-LYMPHOCYTES that induces the expression of MHC CLASS II GENES and FC RECEPTORS on B-LYMPHOCYTES and causes their proliferation and differentiation. It also acts on T-lymphocytes, MAST CELLS, and several other hematopoietic lineage cells.