only one secretory cell type (oxynticopeptic cells), whereas that of mammals is composed of chief cells for digestive-enzyme secretion and parietal cells for acid secretion5. In the gastric gland of the three-spined stickleback, most epithelial cells presented positive expressions for genes involved...
However, the evolution of large water-breathing ectotherms is, in itself, not in contradiction to the GOLT’s underlying model; while the theory has a good explanation for the strikingly close correlation between latitudes and average fish sizes, the existence of whale sharks or large sunfish is...