Fig. 1.

Activity of alkaline phosphatase (ALP) in red blood cell (RBCs, A) and plasma (B) of Zn-adequate (ZA), pair-fed (PF) and Zn-deficient (ZD) rats. Values are mean ± SE (n=7 per for RBCs; n=7 for ZA and PF, n=5 for ZD for plasma). Different superscripts mean significantly different among Zn dietary group at p <0.05 by Tukey, one-way ANOVA. One unit of ALP activity is expressed as the amount of p-nitrophenol phosphate as products being converted from p-nitrophenyl phosphate as substrate for 30 minute reaction time (RBCs ALP 1 unit = 1 nmole p-nitrophenol phosphate/30 min/mg protein ; plasma ALP 1 unit = 1 nmole p-nitrophenol phosphate/30 min/ml)