Isolation of autofluorescent ‘aged’ human fibroblasts by flow sorting: Morphology, enzyme activity and proliferative capacity

In cultures of human fibroblasts the percentage of bright autofluorescent (AF) cells increases with increasing passage number. These autofluorescent cells were isolated using a FACS II cell sorter and compared with sorted non-fluorescent (NF) cells. The AF cells showed an increase in population doub...

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