title: 3H-UTP incorporation in polytene chromosomes of Chironomus permeabilized cells.
mesh_terms: D000818:Animals; D002875:Chromosomes / Q000201:enzymology*; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D004175:Diptera / Q000201:enzymology*; D014158:Transcription, Genetic; D014316:Tritium; D014544:Uridine Triphosphate / Q000378:metabolism
chemical_list: D014316:Tritium; D012321:DNA-Directed RNA Polymerases; D014544:Uridine Triphosphate