In this gland two main types of cells can be identified: the principal cells (P) and the oxyphils (Ox).

The principal cells are small and form irregular groups. They occasionally surround a small lumen, forming a cyst containing a colloid (*). The oxyphils have an abundant acidophilic cytoplasm due to the presence of numerous mitochondria.

Rare in younger individuals, the oxyphils increase in number with age.

In this section the numerous capillaries and venules containing red blood cells can be identified between groups of oxyphils and principal cells.

Stain: H–­­E
Magnification: ×1000