Interleukin-4

**Semantic type:** Amino Acid, Peptide, or Protein|Immunologic Factor

**Definition:** Interleukin-4 (153 aa, ~17 kDa) is encoded by the human IL4 gene. This protein is involved in the regulation of the expression of class II MHC molecules, Fc receptors and cell surface-bound immunoglobulins.

**Synonyms:** - B Cell Proliferating Factor - B-Cell Differentiation Factor-1 - B-Cell Growth Factor - B-Cell Growth Factor-1 - B-Cell Stimulating Factor - B-Cell Stimulation Factor-1 - B-Cell Stimulatory Factor 1 - BCDF-1 - BCGF - BCGF-1 - BCSF 1 - BSF-1 - BSF1 - IL-4 - IL-4 - IL4 - IL4 Protein - Interleukin 4 - Interleukin-4 Precursor - Lymphocyte Stimulatory Factor 1 - MCGF 2 - Mast Cell Growth Factor-2 - T-Cell Growth Factor 2 - interleukin-4