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Aaronson SA, Todaro GJ.Aaronson SA, et al.Virology. 1968 Oct;36(2):254-61. doi: 10.1016/0042-6822(68)90142-6.Virology. 1968.PMID: 4300880No abstract available.
Aaronson SA, Jainchill JL, Todaro GJ.Aaronson SA, et al.Proc Natl Acad Sci U S A. 1970 Aug;66(4):1236-43. doi: 10.1073/pnas.66.4.1236.Proc Natl Acad Sci U S A. 1970.PMID: 4319884Free PMC article.