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Cross AS, Sadoff JC, Kelly N, Bernton E, Gemski P.Cross AS, et al. Among authors: sadoff jc.J Exp Med. 1989 Jun 1;169(6):2021-7. doi: 10.1084/jem.169.6.2021.J Exp Med. 1989.PMID: 2659724Free PMC article.