Fig. 1.

The effect of Co²⁺ treatment on body weight and organ weight. Adult male rats were given daily i.p. injections of 1 mg/kg CoCl₂ or distilled water (control) for either 7 days or 28 days. Triangles in a, b represent the body weight gain of rats in control groups (n = 3) and squares represent the body weight gain of rats in the Co treated group (n = 6). Data are presented as the % weight gain over time compared to day 0. c, d show histograms representing the organ weights from rats in the control group (n = 3) and Co-treated group (n = 6) at 7 days (c) and 28 days (d). Data are presented as the percentage of organ weight/body weight. All data are presented as mean ± SEM, (two-sample t-test, *p < 0.05 with respect to control)