Immunohistochemical studies exploit the principle of antibodies binding specifically to antigens of applied immunology that can catalyze a color-producing reaction via chromogenic reagents (fluorescein, enzyme, metal ion, isotopes) marked with antibodies to further confirm antigens (polypeptide and proteins) in intracellular tissues and study its location, qualitative nature and relative quantification, which is called immunohistochemistry. RiboBio can provide IHC staining services.