Hopefully, you have found ducts which identify this as an exocrine
gland, composed of many serous acini (with acidophilic secretory
granules) and with conspicuous large ducts in the interlobular connective
tissue. If you haven't recognized acini and ducts, look again
now. (Make sure you distinguish ducts from blood vessels; the
ducts are the ones with the cuboidal-to-columnar epithelium, two-layered
in the larger examples.)
If you are unnaturally careful and astute, you might also have noticed
that some acini have prominent oval nuclei in their centers, with these
nuclei appearing similar to those of duct epithelium. (What might
you name cells found in the centers of acini?)
Hopefully, you have also noticed numerous pale patches of cells (e.g.,
arrows in inset) scattered throughout the parenchyma, and noticed that
the cells comprising such patches are organized into cords (resembling
parathyroid) rather than acini. If not, please examine the specimen
again.
Make sure you can distinguish between the secretory parenchyma and
the numerous small intralobular ducts. (In small ducts, the nuclei
are centrally located and the cytoplasm is not conspicuously polarized.)
Note the number and location of adipocytes in this specimen. (Trivia:
Fat cells are common in intralobular stroma of salivary glands
but rare in normal pancreas.)
No more hints.
