Fig. 3. Effect of (A) histidine, (B) cysteine or (C) taurine solutions upon Zn(II) accumulation rate into epithelium (scrapings), subepithelium (intestinal tissue remaining following scraping) and post-intestinal (pooled blood and body) compartments following perfusion of in vivo cannulated intestine in combination with 50 µmol l–1 Zn(II). Values are means ± S.E.M. of 4–10 replicates. *Significant differences between control and treatment, 
between D- and L-stereoisomers, and 
between treatment concentrations were tested at P<0.05, ANOVA.
