Fig. 5. Representative patterns of cell cycle phase distribution by flow cytometric analysis of fibroblasts from non-AD and AD sample in resting conditions and at different times after H₂O₂ treatment. Cells were exposed to 1 mM H₂O₂ for 15 minutes, washed and cultured for an additional 6 or 20 hours (as indicated by the numbers in the inserts). Time 0 indicates that cells are in the basal condition.