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Cytotoxicity of various concentrations of E. angustifolia extract and E. angustifolia-loaded niosome against HFF normal cells within 72 h. The viable HFF cells subjected to distilled water were used as controls and set as 100%. The cytotoxic cut-off was set to 70% viable cells, i.e., a lethal dose of 30%. N = 3. ***: p < 0.001, **: p < 0.01, *: p < 0.05.
