the regulation of ornithine decarboxylase ( odc ) activity by the polyamine derivatives n1 , n8-bis ( ethyl ) -spermidine and n1 , n12-bis ( ethyl ) spermine was studied using a line of l1210 cells resistant to alpha-difluoromethylornithine ( d-r cells ) , which contain very high levels of odc , and a synthetic mrna prepared from a plasmid containing an insert corresponding to odc mrna adjacent to an sp6 rna polymerase promoter .
C0002260
alpha-difluoromethylornithine
C0029282
odc