Transcription during cell differentiation in Naegleria gruberi. Preferential synthesis of messenger RNA.

Adenosine/metabolism Amoeba/cytology,drug effects,growth & development,metabolism Animals Carbon Isotopes Cell Differentiation Cell Fractionation Cell Nucleus/metabolism Centrifugation, Density Gradient Cytoplasm/metabolism Edetic Acid/pharmacology Kinetics Lysine/metabolism Phenotype Polyribosomes/drug effects,metabolism RNA, Messenger/biosynthesis RNA, Ribosomal/biosynthesis Ribonucleases/pharmacology Transcription, Genetic Tritium Uracil/metabolism

Carbon Isotopes RNA, Messenger RNA, Ribosomal Tritium Uracil Edetic Acid Ribonucleases Lysine Adenosine