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Percentage cell viability of immortalized human keratinocyte (HaCaT) cells after 48 h exposure to Aloe muth-muth gel (a) and Aloe muth-muth whole leaf (b) plant material. The data were normalized to the untreated control that is considered as 100% viable. The * indicates statistical significance in comparison to the untreated control (Bonferroni test, p < 0.05).
