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Science Inquiry Project

Science Inquiry Project. Created by JO (otherwise called Sarah). THE BIG QUESTION…. How do we become allergic to things?. What Are Allergies?. An exaggerated immune response or reaction or to substances that are generally not harmful Common symptoms include: rashes hives

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Science Inquiry Project

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  1. Science Inquiry Project Created by JO (otherwise called Sarah)

  2. THE BIG QUESTION… How do we become allergic to things?

  3. What Are Allergies? • An exaggerated immune response or reaction or to substances that are generally not harmful • Common symptoms include: • rashes • hives • itching • nasal congestion • red, itchy, watery eyes

  4. Sensitization • Allergens (usually mold and/or spores) come in contact with skin • T-cells recognize allergen as foreign and release chemicals • Chemicals instruct B-cells to produce IgE antibodies • Some antibodies attach to mast cells

  5. When the Allergen Comes Back… • When allergen binds to IgE cells • Mast cells release histamine

  6. Histamine • Chemical released by mast cells • Causes asthma and allergy symptoms • Makes blood vessels leak, causing inflammation • Inflammation causes:  warmth and swelling of the skin  Itchy, watery eyes

  7. Histamine (continued) • Causes sneezing and increased mucus production in the nasal cavity and airways • Causes nasal drip (runny nose) • Causes post-nasal drip (into the throat) • Causes a cough • Tightening of smooth muscle in the airways

  8. BIBLIOGRAPHY • www.njc.org • www.philekins.blogspot.com • My awesome dad who specialized in internal medicine

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