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Allergies: A big overreaction

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A woman blows their nose
Allergies: A big overreaction

SUBJECTS:  Science

YEARS:  9–10


An allergic reaction occurs when the human immune system makes a mistake and responds to harmless things such as pollen.

Watch this clip to learn about the role that antibodies, immune cells, receptors and chemicals such as histamine play in triggering an allergic reaction.

See an animated diagram showing the immune system's response to an allergy.


Acknowledgements

Video © American Chemical Society.


Copyright

Metadata © Australian Broadcasting Corporation and Education Services Australia Ltd 2012 (except where otherwise indicated). Digital content © Australian Broadcasting Corporation (except where otherwise indicated). Video © Australian Broadcasting Corporation (except where otherwise indicated). All images copyright their respective owners. Text © Australian Broadcasting Corporation and Education Services Australia is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0).

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