The biologist observed the skin cells keratinising under the microscope, a sign of normal differentiation.

The biopsy revealed abnormal keratinisation in the epidermal layer, indicating a possible disorder.

If the wound does not heal properly, the exposed cells may keratinise and form an unusually hard crust.

Under the microscope, we observed how the outer layer of cells keratinised as the wound healed.

In reptiles, the skin keratinises to form protective scales.

The histology report described multiple keratinisations across different layers of the epidermis, suggesting a chronic irritation.