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Changes with age in the pattern of endothelial nuclear length-to-width ratios (L/W) upstream and downstream of rabbit aortic branches. The upstream L/W has been divided by the downstream L/W, so values <1 indicate greater nuclear elongation downstream, and values >1 indicate greater elongation upstream. Each point indicates the data for a single rabbit (24 branches in total, 5–8 in each age group). Ages are the mean for each group.
