Common conditions such as indigestion and heartburn as well as peptic ulcers, autoimmune gastritis and stomach and esophageal cancers have one thing in common—they involve disruptions of the normal activity of parietal cells (PCs) in the stomach, the only cells in the body that produce acid. Despite their medical importance, little is known about the molecular and genetic pathways that direct the generation and maturation of PCs from stem cells.
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