title: Animal DNA-dependent RNA polymerases. 3. Purification of calf-thymus BI and BII enzymes.
mesh_terms: D000818:Animals; D002417:Cattle; D002499:Centrifugation, Density Gradient; D002848:Chromatography, DEAE-Cellulose; D002852:Chromatography, Ion Exchange; D012321:DNA-Directed RNA Polymerases / Q000302:isolation & purification*; D004355:Drug Stability; D004591:Electrophoresis, Polyacrylamide Gel; D005990:Glycerol; D006882:Hydroxyapatites; D012313:RNA; D013950:Thymus Gland / Q000201:enzymology*
chemical_list: D006882:Hydroxyapatites; D012313:RNA; D012321:DNA-Directed RNA Polymerases; D005990:Glycerol