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Title
IN BRIEF.
Abstract
Offers the summary of several studies about cells and biology. "Targeted Disruption of the Three Rb-Related Genes Leads to Loss of G1 Control and Immortalization," by J. Sage et al; "DNA Methylation in Drosophila Melanogaster," by F. Lyko, B. H. Ramsahoyer, and R. Jaenisch; "Binding of Disease-Associated Prion Protein to Plasminogen," by M. B. Fischer.