All rats Classification of animals during period of mercury administration Classification of animals after mercury administration (chelation therapy period)
Control group  
drinking group High dose drinking of mercury (80 mg Hg2+/kg body weight) Before chelation therapy
Without chelation therapy
Combination therapy with DFX (70 mg/kg body weight) + DFP (150 mg/kg body weight)
Low dose drinking of mercury (40 mg Hg2+/kg body weight) Before chelation therapy
Without chelation therapy
Combination therapy with DFX (70 mg/kg body weight) + DFP (150 mg/kg body weight)
Table 1: Classification of animals.