YES
UNICELLULAR EXOCRINE GLANDS

  1. The epithelium (B) bordering the lumen (D) is simple columnar.
  2. In this photo, the unicellular glands are goblet cells (A) that manufacture and secrete mucus (C).
  3. In this specific case, goblet cells are unicellular glands because they do not associate with each other to form secretory units (= multicellular exocrine glands). They are instead scattered amongst the non secretory cells of the epithelium and secrete mucus directly in the lumen.