title: The activity and properties of poly(adenosine diphosphate ribose) polymerase in vitro during the embryonic development of the South African clawed toad Xenopus laevis.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002467:Cell Nucleus / Q000201:enzymology; D012321:DNA-Directed RNA Polymerases / Q000302:isolation & purification / Q000378:metabolism*; D004625:Embryo, Nonmammalian / Q000201:enzymology*; D007700:Kinetics; D012313:RNA; D013696:Temperature; D013997:Time Factors; D014981:Xenopus / Q000196:embryology*
chemical_list: D012313:RNA; D012321:DNA-Directed RNA Polymerases