FIGURE 15.21 ■ A section of feline jejunum illustrating the bases of the
intestinal glands with Paneth cells. Stain: periodic acid–Schiff. ×165.
FIGURE 15.22 ■ A section of human ileum illustrating a Peyer patch and the
submucosal lymphocytic aggregation. Stain: hematoxylin and eosin. ×25.
619