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Chronic Bronchitis
Inflammation of the bronchi in the lungs that is usually caused by smoking or exposure to environmental contaminants.
Mucus
A slippery secretion produced by mucous membranes and glands for protection and lubrication in various parts of the body.
Bronchioles
The smallest air passages in the lungs, extending from the bronchi and leading to the alveolar sacs.
Cartilage
A flexible and semi-rigid supportive connective tissue found throughout the body, including the joints, ear, nose, and trachea, providing structure and allowing for movement.
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