abnormal interleukin-4 secretion increased interleukin-4 secretion MP:0008699 MPheno.ontology increase in the production or release of a soluble factor produced by activated T-cells that induces the expression of MHC class II genes and FC receptors on B-cells and causes their proliferation and differentiation; it also acts on T-cells, mast cells and several other hematopoietic lineage cells increased B cell stimulatory factor-1 secretion increased B-cell growth factor-1 secretion increased B-cell growth factor-I secretion increased B-cell proliferating factor secretion increased B-cell stimulating factor-1 secretion increased B-cell stimulatory factor 1 secretion increased B-cell stimulatory factor-1 secretion increased BCGF-1 secretion increased BSF-1 secretion increased Binetrakin secretion increased IL-4 secretion increased IL4 secretion increased MCGF-2 secretion increased mast cell growth factor-2 secretion