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. 2023 Apr 20;13(4):699. doi: 10.3390/biom13040699

Figure 8.

Figure 8

Medium hair presence (%) before and after the trial: (a) Experimental Group 1; (b) Placebo Control Group 2; (c) Caffeine Control Group 3. Small boxes—median values; large boxes—median values ± standard error of median (SEM); whiskers—median values ± 1.96 SEM. p< 0.05.