not only extracts from escherichia coli , ustilago maydis , drosophila melanogaster , rat neurones , calf thymus , human fibroblast , and hela cells possess such high mr activities , but also highly purified e. coli dna polymerase iii core enzyme , u. maydis dna polymerase , and d. melanogaster embryo and calf thymus dna alpha polymerases .
C0012890
dna
C0012892
dna polymerase