Table 1.

Comparison of body weight gain of rats exposed to 0, 0.5, 5 and 20 ppm fluoride for 15, 30 and 60 days. Data are expressed as mean ± S.D., (n = 3)

Groups	Body weight gain (g)
	15 days	30 days	60 days
Control	24.00 ± 4.58	76.00 ± 8.54	124.67 ± 2.08
Group I (0.5 ppm)	19.33 ± 4.04	70.67 ± 15.50	127.33 ± 9.29
Group II (5 ppm)	24.67 ± 7.23	62.67 ± 7.51	126.00 ± 11.53
Group III (20 ppm)	23.33 ± 4.51	66.67 ± 11.02	129.00 ± 5.00