This field shows the following features:

• Epithelial cells of the hair matrix (A)
• Transformation of epithelial cells into the elongated cells of the keratogenous zone (B)
• Transformation of the elongated cells (C) into hard keratin (pale yellow) of the hair cortex. This hair shows a narrow medulla in the centre of the cortex.
• Layer of basophilic cells that form the cuticle (D)
• Acidophilic inner root sheath which disintegrates along the keratogenous zone (E)
• External root sheath (F)
• Connective tissue sheath of the follicle (G)
• Adipose tissue of the hypodermis (H)

The spaces (*) seen above between the hair and the external root sheath are artefacts of tissue preparation.

Stain: H–­­E
Magnification: ×325