Interleukin-5

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

**Definition:** Interleukin-5 (134 aa, ~15 kDa) is encoded by the human IL5 gene. This protein plays a role in the growth and differentiation of both B-cells and eosinophils.

**Synonyms:** - B Cell Differentiation Factor I - B-Cell Differentiation Factor I - B-Cell Growth Factor-II - BCGF-II - EDF - Eo-CSF - Eosinophil Differentiation Factor - IL-5 - IL-5 - IL5 - Interleukin 5 - Interleukin 5 Precursor - T-Cell Replacing Factor - TRF - interleukin-5