marginally nonsignificantP = 0.06443
3 ) (ANOVA; plasmid main effect, F 1,40 = 7.438; P = 0.009435) and was reduced by the presence of Hg(II) in the media (mercury main effect, F 1,40 = 5.727; P = 0.02149), while the interaction of these factors was marginally nonsignificant (plasmid-mercury interaction, F 1,40 = 3.616; P = 0.06443).