Mutagenicity of Cotoneaster extract towards S. typhimurium TA98 and TA100 strains with or without S9.

abDifferences between groups having the same letter in the same column are not statistically significant (ANOVA, Tamhane, p>0.05).*Negative control: Sterile distilled water (100 µl/plate) was used as negative control for S. typhimurium TA98 and TA100 both in the presence and absence of S9.®Positive controls:2-Aminofluorene (5 µg/plate) was used as positive indirect mutagen in the presence of S9 mix; 4-nitro-O-fenilendiamine (20 µg/plate) was used as positive direct mutagen in the absence of S9 mix for S. typhimurium TA98 strain.2-Aminoanthracene (20 µg/plate) was used as positive indirect mutagen in the presence of S9 mix; Sodium azide (5 µg/plate) was used as positive direct mutagen in the absence of S9 mix for S. typhimurium TA100.Mutagenicity of Cotoneaster extract towards S. typhimurium TA98 and TA100 strains with or without S9.