Table 1.

Mouse drinking water consumption, body weights, small intestine length and numbers of small intestinal Peyer’s patches in male or female mice following 45-day drinking water exposure to U or As³⁺.^a

Sex	Metal	Dose	Water Intakeb	Body Wt. (g)	Small Intestine Length (cm)	# of Peyer’s Patches
Male	U	Control	4.10 ± 0.34	30.68 ± 1.36	34.43 ± 1.82	7.50 ± 1.52
		5 ppm	4.39 ± 0.71	30.63 ± 1.93	34.48 ± 2.16	6.17 ± 0.75
		50 ppm	3.92 ± 0.40	30.49 ± 1.06	34.42 ± 0.97	6.50 ± 2.07
	As3+	Control	3.07 ± 0.25	33.36 ± 3.16	35.83 ± 1.44	5.00 ± 1.10
		100 ppb	3.31 ± 0.31	31.07 ± 1.60	34.83 ± 1.86	6.17 ± 1.60
		500 ppb	3.24 ± 0.26	29.26 ± 3.26	35.73 ± 1.19	5.83 ± 0.75
Female	U	Control	3.22 ± 0.54	22.40 ± 0.80	32.68 ± 0.68	6.33 ± 1.34
		5 ppm	3.16 ± 0.27	23.90 ± 1.34	34.17 ± 1.65	6.17 ± 1.47
		50 ppm	3.17 ± 0.35	22.58 ± 2.15	32.23 ± 2.31	6.67 ± 0.82
	As3+	Control	2.72 ± 0.21	24.80 ± 2.85	35.63 ± 2.62	7.50 ± 0.84
		100 ppb	2.52 ± 0.33	25.21 ± 1.80	35.70 ± 1.85	6.00 ± 1.55
		500 ppb	2.31 ± 0.20	23.53 ± 2.14	34.82 ± 1.15	7.17 ± 0.98

^aWater intake = mL of water consumed per mouse per day.

^bData expressed as mean ± SD of each group (n = 5).