Oesophagus, light micrograph

Oesophagus, light micrograph


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Oesophagus. Light micrograph of a section through an oesophagus from a dog. The oesophagus passes food from the mouth to the stomach. The oesophagus lumen (white, top) is lined by a layer of stratified squamous epithelium (pink). This protects underlying tissue and enables the passage of solid material by the lubricant action of its glandular secretion. At bottom is a supporting layer of connective tissue (yellow), the lamina propria, which is rich in elastin fibres. Magnification: x278 when printed at 10 centimetres wide.

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