Table 4.

Effects of exposure to O20 and O30 extracts on the viability of keratinocytes at different concentrations, as measured by the MTT assay.

Concentrations (μg/mL)
	0.1	1	10	100	1000
Medium	100.01 ± 16.05	100.01 ± 16.05	100.01 ± 16.05	100.01 ± 16.05	100.01 ± 16.05
Triton X-100	0.00 ± 0.00	0.00 ± 0.00	0.00 ± 0.00	0.00 ± 0.00	0.00 ± 0.00
O20	100.23 ± 20.82	100.21 ± 21.94	113.60 ± 22.86	106.79 ± 17.60	61.05 ± 10.86 *
O30	100.63 ± 7.08	105.65 ± 14.45	98.92 ± 14.82	107.31 ± 8.64	42.06 ± 5.33 *

Values are expressed as mean ± standard deviation (n = 4). * p < 0.05 vs. control. MTT: 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide.