Lifetime of the messenger RNA's which code for ribosomal proteins in L-cells.

Amino Acids/metabolism Carbon Isotopes Centrifugation, Density Gradient Dactinomycin/pharmacology Electrophoresis Half-Life Histones/biosynthesis Kinetics L Cells/cytology,drug effects,metabolism Protein Biosynthesis RNA, Messenger/metabolism Ribosomes/drug effects,metabolism Tritium

Amino Acids Carbon Isotopes Histones RNA, Messenger Tritium Dactinomycin