FIG. 8.
Protective effect of Zn+2 supplement in As+3-induced DNA damage and PARP activity in D1 cells. D1 cells were treated with 50 and 500 nM As+3, 10 µM Zn+2, or the combinations. A, DNA damages were measured by percentage of DNA in tail using alkaline Comet assay. B, PARP activities were measured with Trevigen ELISA kit represented by absorbance at 450 nm. *Significantly different compared with 50 nM As+3 (P < .05), #Significantly different compared with 500 nM As+3 (P < .05). Results are means ± SD.