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Grassmann, R., S. Berchtold, C. Aepinus, C. Ballaun, E. Boehnlein, i B. Fleckenstein. In Vitro Binding of Human T-cell Leukemia Virus Rex Proteins to the Rex-response Element of Viral Transcripts. 1991.

Grassmann, R., et al. In Vitro Binding of Human T-cell Leukemia Virus Rex Proteins to the Rex-response Element of Viral Transcripts. 1991.