Lamellar bodies

Red arrows indicate secreted lamellar bodies, and green arrows indicate lamellar bodies in the cytoplasm. Scale bar = 200 nm.

In cell biology, lamellar bodies (otherwise known as lamellar granules, membrane-coating granules (MCGs), keratinosomes or Odland bodies) are secretory organelles found in type II alveolar cells in the lungs, and in keratinocytes in the skin. They are oblong structures, appearing about 300-400 nm in width and 100-150 nm in length in transmission electron microscopy images. Lamellar bodies in the alveoli of the lungs fuse with the cell membrane and release pulmonary surfactant into the extracellular space.[1][2]

  1. ^ Ishida-Yamamoto, Akemi; Kishibe, Mari (23 March 2011). "Involvement of corneodesmosome degradation and lamellar granule transportation in the desquamation process". Medical Molecular Morphology. 44 (1): 1–6. doi:10.1007/s00795-010-0513-4. PMID 21424930. S2CID 320940.
  2. ^ Tortora and Derrickson, Gerard J. and Bryan H. (2011). Principles of anatomy and physiology (13th ed.). Hoboken, N.J.: Wiley. p. 158. ISBN 978-0-470-64608-3.