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Watanabe M, Levine CG, Shen L, Fisher RA, Letvin NL.Watanabe M, et al. Among authors: shen l.Proc Natl Acad Sci U S A. 1991 Jun 1;88(11):4616-20. doi: 10.1073/pnas.88.11.4616.Proc Natl Acad Sci U S A. 1991.PMID: 2052546Free PMC article.
Chen ZW, Kou ZC, Shen L, Regan JD, Lord CI, Halloran M, Lee-Parritz D, Fultz PN, Letvin NL.Chen ZW, et al. Among authors: shen l.Proc Natl Acad Sci U S A. 1994 Aug 2;91(16):7501-5. doi: 10.1073/pnas.91.16.7501.Proc Natl Acad Sci U S A. 1994.PMID: 7914369Free PMC article.
Shen Y, Zhou D, Chalifoux L, Shen L, Simon M, Zeng X, Lai X, Li Y, Sehgal P, Letvin NL, Chen ZW.Shen Y, et al. Among authors: shen l.Infect Immun. 2002 Feb;70(2):869-77. doi: 10.1128/IAI.70.2.869-877.2002.Infect Immun. 2002.PMID: 11796622Free PMC article.