The product contains polyhedrin protein co-crystalized with mature mouse Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF). GM-CSF is a cytokine that stimulates the growth and differentiation of hematopoietic precursor cells including granulocytes, eosinophils, erythrocytes, and macrophages. Mature mouse GM-CSF shares 54% and 69% amino acid sequence identity with human rat GM-CSF respectively. The activity of the human and mouse GM-CSF is species-specific. Rat GM-CSF is fully active on mouse cells, but mouse GM-CSF is weakly active on rat cells. GM-CSF is involved in immune response, allergy, inflammatory processes, angiogenesis and, autoimmunity.