Table 1.

In vitro cytotoxicity of argan extracts on HTC cells

Treatment	% Viability
	6 h		21 h
DMSO	98.6	±0.10	99.0	±0.16
H2O	98.7	±0.15	99.6	±0.21
A1	97.5	±0.55	97.0	±0.52
B1	98.7	±0.46	97.4	±0.47
B2	97.3	±0.98	98.5	±1.47
B3	97.8	±0.12	97.5	±0.10
C1	98.8	±0.48	95.3	±0.44

The cells were exposed to 50 μg ml⁻¹ of each extract for 6 or 21 h and viability was then determined by Trypan Blue (0.2%) exclusion. The suitable controls (DMSO or H₂O) were carried out as indicated in the Materials and Methods section.