title: RNA polymerases in isolated rat heart nuclei and their response to cyclic nucleotides.
mesh_terms: D000546:Amanitins / Q000494:pharmacology; D000818:Animals; D002467:Cell Nucleus / Q000201:enzymology; D000242:Cyclic AMP / Q000494:pharmacology*; D006152:Cyclic GMP / Q000494:pharmacology*; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D003609:Dactinomycin / Q000494:pharmacology; D008274:Magnesium / Q000494:pharmacology; D008297:Male; D008345:Manganese / Q000494:pharmacology; D009206:Myocardium / Q000201:enzymology / Q000648:ultrastructure*; D009994:Osmolar Concentration; D012319:RNA Polymerase II / Q000378:metabolism; D012320:RNA Polymerase III / Q000378:metabolism; D051381:Rats
chemical_list: D000546:Amanitins; D003609:Dactinomycin; D008345:Manganese; D000242:Cyclic AMP; D012319:RNA Polymerase II; D012321:DNA-Directed RNA Polymerases; D012320:RNA Polymerase III; D006152:Cyclic GMP; D008274:Magnesium