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Time: 2024-03-28T16:54:12Z
URL: http://scholar.google.com/scholar_lookup?title=B7+expression+on+T+cells+down-regulates+immune+responses+through+CTLA-4+ligation+via+T-T+interactions+%5Bcorrections%5D&year=2004&author=Taylor&journal=J+Immunol&volume=172&issue=1&pages=34-39&doi=10.4049%2Fjimmunol.172.1.34&pmid=14688306