R&D Systems, a Bio-Techne Brand's CTLA-4 Antibody is a Goat Polyclonal antibody. This antibody has been shown to work in applications such as: Mass Spectrometry, Assay, Flow Cytometry, Functional Assay, Immunocytochemistry, Immunohistochemistry, Immunohistochemistry - fixed, Immunohistochemistry - frozen, and Western Blot.