Asthma may be attributed to 1. allergic reaction of the mast cells in the lungs 2. inflammation of the trachea 3. accumulation of fluid in the lungs 4. bacterial infection of the lungs
Subtopic: Â Allergies & Autoimmunity |
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In higher vertebrates, the immune system can distinguish between self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self–cells, then it leads to: