... systems in the epithelial lining of the GI tract deserve further investigation as to their possible etiological roles for forms of PD Here we map the expression pattern of the Adh1, Adh3, Adh4 and ... in the epithelial cells of the gastric pits and in the neck of the gastric glands Aldh1 expression continued in duodenum with the signal confined to the epithelial cells of the villi, whereas the ... Results The distribution and relative intensity of expression of the Adh1, Adh3, Adh4 and Aldh1 genes in the GI tract of rats and mice is summarized in Fig and Table Figures and document key findings...