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- Callus is a botany term, it is a tissue that
- forms at a damaged plant surface. Composed of
- large, thin-walled parenchyma cells, it grows
- over and around the wound, eventually
- covering the exposed area. In animals, a
- callus is a thickened pad of skin, formed
- where there is repeated rubbing against a
- hard surface. In humans, calluses often
- develop on the hands and feet of those
- involved in heavy manual work.
-
- Subject by: Russell Webb
-