Table 2.

Cd content in blood and milk of cattle raised near a metal smelting zone (n = 20).

Variable	Mean	SD	CV (%)	Minimum	Maximum
Cd in blood, mg/kg	0.0157b	0.0019	0.00	0.0122	0.0191
Cd in milk, mg/kg	0.0197a	0.0073	0.00	0.0110	0.0320

^a,bMeans followed by different letters differ significantly (p ≤ 0.01).