Fig. 1.

Effect of feeding a normal diet versus a Ca-deficient diet on body weight and plasma Ca concentration. Mice were fed a normal diet or a Ca-deficient diet from 4 weeks of age for a period of 4 weeks. Plasma Ca levels (A) were determined every 2 weeks and body weight change (B) was observed every week. Data indicate mean ± S.D. for 8–9 mice. ^**P < 0.01 versus 0-week Ca-deficient diet group, ^##P < 0.01 versus normal diet group at the same week.