Feng, M. et al. 2009. The Effects of Different Sizes of Nanometer Zinc Oxide on the Proliferation and Cell Integrity of Mice Duodenum-Epithelial Cells in Primary Culture. Pakistan Journal of Nutrition. 8, 8 (Jul. 2009), 1164–1166. DOI:https://doi.org/10.3923/pjn.2009.1164.1166.