Multiple nuclear ribonucleic acid polymerases during development of Dictyostelium discoideum.

Animals Cattle Cell Differentiation Cell Nucleus/enzymology Centrifugation, Density Gradient Chromatography, DEAE-Cellulose Chromatography, Ion Exchange DNA DNA, Bacterial DNA, Viral DNA-Directed RNA Polymerases/antagonists & inhibitors,isolation & purification,metabolism Dactinomycin/pharmacology Electrophoresis, Polyacrylamide Gel Macromolecular Substances Molecular Weight Mycotoxins/pharmacology Myxomycetes/enzymology,growth & development Osmolar Concentration Rifampin/pharmacology Salmon Structure-Activity Relationship Templates, Genetic Transcription, Genetic

DNA, Bacterial DNA, Viral Macromolecular Substances Mycotoxins Dactinomycin DNA DNA-Directed RNA Polymerases Rifampin