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IP address: 44.222.104.49
Time: 2024-03-28T15:45:37Z
URL: http://scholar.google.com/scholar_lookup?title=CD4%2B+T+cells+are+required+for+secondary+expansion+and+memory+in+CD8%2B+T+lymphocytes&year=2003&author=Janssen&journal=Nature&volume=421&issue=6925&pages=852-856&doi=10.1038%2Fnature01441&pmid=12594515