when the properties of alpha polymerases derived from early or late passage cultures have been compared , no difference could be detected as a function of cell age in the specific activities of the polymerases in crude cell extracts , their chromatographic behavior on diethylaminoethylcellulose and phosphocellulose columns , and their relative abilities to utilize single deoxyribonucleoside triphosphates with activated dna template .
C0007613
function
C0007634
cell