Human small intestine showing the columnar epithelium. The cytokeratinin the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green.
- S. Schuller
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Human small intestine showing the columnar epithelium. The cytokeratinin the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green. S. Schuller. Source: Wellcome Collection.
