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CTLA-4 is a second receptor for the B cell activation antigen B7.
Linsley PS, Brady W, Urnes M, Grosmaire LS, Damle NK, Ledbetter JA. Linsley PS, et al. Among authors: grosmaire ls. J Exp Med. 1991 Sep 1;174(3):561-9. doi: 10.1084/jem.174.3.561. J Exp Med. 1991. PMID: 1714933 Free PMC article.
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