The (a) intestine, (b) esophagus and (c) stomach are shown. Quiescent stem cells (d) through asymmetric division probably give rise to more rapidly dividing active stem cells, which then produce ...

"The intestine has an enormous ability to regenerate itself after injury, and it does this through a model of dedifferentiation," Dempsey explains. "The cells dedifferentiate back into a type of ...

What's left in the digestive tract passes into the large intestine, where it's eaten by billions of harmless bacteria and mixed with dead cells to form solid feces. Water is reabsorbed into the ...

Molecularly defined serotonin (enterochromaffin) cells of the gut lining were distinguished by single-cell expression analysis, in situ hybridization, and immunohistochemistry into 14 topographically ...