Lectin with specificity for complex cell-surface carbohydrates. Possesses immunomodulatory activity, stimulates lymphocyte mitogenesis, suppresses systemic anaphylaxis reactions and edema, enhances transcription of IL-2, IFN-gamma and TNF-alpha and hemagglutinates red blood cells. Homodimer. Belongs to the fungal immunomodulatory protein (FIP) family.