This antibody recognizes the same epitope as
?clone?

9D9.

Cytotoxic T-lymphocyte associated protein 4, （CTLA-4） also known as CD152 （cluster of differentiation 152）, is a protein receptor that functions as an immune checkpoint and downregulates immune responses. CTLA-4 is constitutively expressed in regulatory T cells but only upregulated in conventional T cells after activation – a phenomenon which is particularly notable in cancers. CTLA-4 may also function via modulation of cell motility and/or signaling through PI3 kinase.