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Variation in dental fluorosis severity among inbred strains of mice. Mice at 5 to 6 wks of age were treated with fluoride (0 ppm or 50 ppm [F] ion) in the drinking water for 60 days. All strains developed dental fluorosis. Dental-fluorosis-susceptible strains are on the right, with those more resistant strains on the left side of the panel.
