Gastric secretion.

The European gastric test meal was widely used in The Mount Sinai Hospital in the 1890s and early 1900s, but was then abandoned diagnostically after the introduction of gastroscopy and radiology. The fundamental methodological advances of Franklin Hollander led to his quantitative formulation of the ionic concentrations of the gastric acid parietal and nonparietal components, followed by his insulin test for completeness of vagotomy.