Assertion: esophagus's gland | /r/MadeOf | cell
Facets:
Source sentences:
text: In addition to the three specialized absorptive features just discussed, the mucosa between the villi is dotted with deep crevices that each lead into a tubular intestinal gland (crypt of Lieberkühn), which is formed by cells that line the crevices (see Figure 23.19).