“…In contrast, these same proteins were enri ched i n regi on L (fi g. 5B). Thi s i s i n agreement wi th anothe r work (10) showing that proteins in the 30,000-40,000 Mr range predominated in the light fractions of a metrizamide gradient. The proteins that remained the more tightly bound to the RNA were those of zone 1, subzones 2a, 2bl-2, 2ef, 3a, 3e (fig.…”