Fig. 3From: The cognitive impairment and risk factors of the older people living in high fluorosis areas: DKK1 need attentionThe mRNA level of DKK1 in the high and low fluoride drinking water groups is shown. The mRNA level of DKK1 was higher in subjects form the high fluoride drinking water areas than those from normal fluoride drinking water areas. ***P < 0.001. DKK1: dickkopf-1Back to article page