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AQA Biology Specification Question

For the immune response I can not find any content in the specification for AQA or the textbook relating to defence mechanism of physical barriers like the skin or about blood clotting and histamines for inflammation.

However I learnt it in school and I saw it in a free science lesson video.

Has anyone come across a past exam question related to this or know if we need to know this content?
Sorry you've not had any responses about this. :frown: Are you sure you've posted in the right place? :smile: Here's a link to our subject forum which should help get you more responses if you post there. :redface:

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