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Black JE, Isaacs KR, Anderson BJ, Alcantara AA, Greenough WT.Black JE, et al. Among authors: isaacs kr.Proc Natl Acad Sci U S A. 1990 Jul;87(14):5568-72. doi: 10.1073/pnas.87.14.5568.Proc Natl Acad Sci U S A. 1990.PMID: 1695380Free PMC article.