Figure 1From: Gene targeting in adult rhesus macaque fibroblastsExtension of lifespan by exogenous telomerase. Early passage rhesus macaque fibroblasts were transfected with vector pCi-neo carrying no insert (Vector) or the hTERT cDNA (hTERT). Transfected cells were maintained in log phase growth and counted at the time points shown, with the age of each culture expressed in population doublings.Back to article page