Table 4. Sister chromatid exchange by total carotenoid treatment on lymphocyte culture.

Treatment	SCE	PRI	MI (%)
Control	2.50±0.28	2.26±0.19	8.27±0.95
B(a)P	8.62±0.61	1.20±0.18	1.32±0.08
Carotenoids (100 µg/mL)	2.30±0.16	2.15±0.12	9.91±1.91
Carotenoids (200 µg/mL)	2.52±0.17	2.27±0.09	9.99±1.08
Carotenoids (300 µg/mL)	2.37±0.20	2.29±0.08	10.42±1.91
Carotenoids (100 µg/mL) + B(a)P	4.79±0.29**	1.89±0.02*	5.29±0.41**
Carotenoids (200 µg/mL) + B(a)P	4.26±0.29**	1.92±0.07*	5.28±0.41**
Carotenoids (300 µg/mL) + B(a)P	3.25±0.26**	1.97±0.08*	5.26±0.61**

PRI: proliferative index; MI: mitotic index; **: P<0.001; *P<0.01.