Anti-IL-10 antibodies are useful for the detection and measurement of the target protein, IL-10. IL-10 is a reported alias name for the human gene IL10, or 'interleukin 10'. The 178-amino acid protein is a member of the IL-10 family. The cellular localization is predicted to be secreted. Glycosylation sites have been reported. Antibodies to the IL-10 antigen may be useful for studying cytokine signaling.