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Speiser DE, Chvatchko Y, Zinkernagel RM, MacDonald HR.Speiser DE, et al.J Exp Med. 1990 Nov 1;172(5):1305-14. doi: 10.1084/jem.172.5.1305.J Exp Med. 1990.PMID: 2230645Free PMC article.
Speiser DE, Zürcher T, Ramseier H, Hengartner H, Staeheli P, Haller O, Zinkernagel RM.Speiser DE, et al.Proc Natl Acad Sci U S A. 1990 Mar;87(5):2021-5. doi: 10.1073/pnas.87.5.2021.Proc Natl Acad Sci U S A. 1990.PMID: 2308961Free PMC article.