LEVELS OF DNA-POLYMERASES IN AGING RAT BRAIN CELLS.

The article presents an abstract of a research paper analyzing the levels of DNA polymerases in aging rat brain cells. Isolated neurons and astroglia from cerebral cortex of inbred Wistar rats of three ages: 4 days, 6 months and 2 years, were suspended in extraction buffer and sonicated. From the results at all ages studied and in both types of brain cells, β polymerase appears to be the predominant one although other DNA-polymerases seem to be present in reasonable amounts.