Light micrograph of a pylorus from a human stomach. At top is the transition between the gastric mucosa of the pyloric antrum (left) and duodenum (right) which show Brunner glands. The thickened inner muscular layer is the pyloric sphincter.

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Photo credit: © JOSE CALVO / SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: -, antrum, background, digestive, follicles, gastric, gastrointestinal, glands, gut, histology, human, lieberkuhn, light, lm, lymphoid, micrograph, microscope, microscopy, mucosa, muscular, pyloric, pylorus, sphincter, stomach, submucosa, system, tract, white