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Keller JR, Jacobsen SE, Sill KT, Ellingsworth LR, Ruscetti FW.Keller JR, et al. Among authors: ellingsworth lr.Proc Natl Acad Sci U S A. 1991 Aug 15;88(16):7190-4. doi: 10.1073/pnas.88.16.7190.Proc Natl Acad Sci U S A. 1991.PMID: 1831268Free PMC article.
Keller JR, Sing GK, Ellingsworth LR, Ruscetti SK, Ruscetti FW.Keller JR, et al. Among authors: ellingsworth lr.Ann N Y Acad Sci. 1990;593:172-80. doi: 10.1111/j.1749-6632.1990.tb16109.x.Ann N Y Acad Sci. 1990.PMID: 2375594No abstract available.