ACKNOWLEDGMENTS
We thank G. Stamatis from the Department of Mineralogy and Geology for provision of atomic absorption equipment for the determination of Cr2O3. We also thank G. Papadomichelakis and E. Zoidis from the Department of Nutritional Physiology and Feeding for their kind assistance during organ and blood sampling procedures. We acknowledge funding via a Biomin Research and Innovation Network (BRAIN) research grant.