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The inhibitory effect of Opuntia humifusa fruit water extract (OHE) on solar ultraviolet (sUV)-induced intracellular reactive oxygen species (ROS) production in human dermal fibroblasts (HDFs). Data are presented as the calculated percentage of the control group expression and shown as the mean ± standard deviation (SD). ### p < 0.001 vs. control group (Student’s t-test), ** p < 0.01, *** p < 0.001 vs. UV-radiated groups (Dunnett’s test).
