Category Nuances matching epithelium:

• hard,
• complex,
• exposed,
• flat,
• mammalian,
• oral,
• isolated,
• organized,
• mucosal,
• external,
• normal,
• specialized,
• simple,
• sensitive,
• glandular,
• embryonic,
• model,
• amphibian,
• reproductive,
• permeable,
• tight,

Members for simple category epithelium:

• intestinal_tract,
• endometrium,
• frog_skin,
• skin,
• alimentary_tract,
• cornea,
• corneal_epithelium,
• respiratory_tract,
• mucous_membrane,
• stroma,
• bronchial_epithelium,
• surface_ectoderm,
• teeth,
• gingiva,
• amphibian_skin,
• conjunctiva,
• oral_mucosa,
• gingival_mucosa,
• retina,
• oral_epithelium,
• transitional_epithelium,
• urogenital_tract,
• nasal_epithelium,
• genital_tract,
• tonsil,