![Histology on Twitter: "Plicae circulares (valves of Kerckring), very regularly placed. Notice the intestinal villi on top of them. This specimen comes from the proximal small intestine but not the duodenum (there Histology on Twitter: "Plicae circulares (valves of Kerckring), very regularly placed. Notice the intestinal villi on top of them. This specimen comes from the proximal small intestine but not the duodenum (there](https://pbs.twimg.com/media/DtFzSTCV4AUVIMz.jpg)
Histology on Twitter: "Plicae circulares (valves of Kerckring), very regularly placed. Notice the intestinal villi on top of them. This specimen comes from the proximal small intestine but not the duodenum (there
![First portion of the duodenum showing the Brunner glands located on the submucosa on the circular folds or Kerckring valves. Here, the intestinal vill Stock Photo - Alamy First portion of the duodenum showing the Brunner glands located on the submucosa on the circular folds or Kerckring valves. Here, the intestinal vill Stock Photo - Alamy](https://c8.alamy.com/zooms/9/890145da92184d868fd83d6abb16df38/2e9gn76.jpg)
First portion of the duodenum showing the Brunner glands located on the submucosa on the circular folds or Kerckring valves. Here, the intestinal vill Stock Photo - Alamy
![Well-formed scar and absent valves of Kerckring or mucosal folds in the... | Download Scientific Diagram Well-formed scar and absent valves of Kerckring or mucosal folds in the... | Download Scientific Diagram](https://www.researchgate.net/profile/Scott-Fanning/publication/221806103/figure/fig5/AS:305370393268228@1449817383448/Well-formed-scar-and-absent-valves-of-Kerckring-or-mucosal-folds-in-the-region-of-a_Q320.jpg)