Bronchioles are distinguished from bronchi by a lack of glands and cartilage. Hematoxylin and eosin stain.
From: Corrin B. Development and structure of the normal lung. In: Clinical Atlas Respiratory Diseases, Turner-Warwick M, Hodson ME, Corrin B, Kerr IH (Eds), JB Lippincott, London, 1989.
