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Reviscometer 600 measurements. This probe quantifies the ability of HBO preconditioning to suppress macroscopic changes in the skin arising from UV-A exposure. There is a statistically significant increase in the probe readings (RRT, expressed in arbitrary units) of mice that received HBO preconditioning four times per week relative to mice exposed to UV-A only. A higher number indicates less damaged (i.e., more elastic) skin (ANOVA and Tukey’s post hoc test: *p < 0.01)
