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[3H]uridine pulse-chase labeling kinetic analysis of ribosomal-subunit formation. (A) Assembly of 30S subunits (□) and 50S subunits (▪) without hygromycin B. (B) Assembly of 30S subunits (□) and 50S subunits (▪) with hygromycin B. The results are the means of two determinations.
