Fig 2. W2254, Large intestine (cs) H&E.
The mucosa contains straight, simple tubular glands -- Crypts
of Lieberkuhn (CL) -- that extend to the muscularis mucosa
(MM). Between the glands is a lamina propria (L) that contains
considerable numbers of lymphocytes and other cells of the
immune system. The cells that line the surface of the colon
and the glands are principally absorptive cells (AC) and goblet
cells (GC).