The body reacting to an allergen and how this interacts with mast cells:

The degranulation of a mast cell:

Video Article on Anaphylaxis from the Mayo Clinic: (This video is essential watching for anyone with a mast cell disorder diagnosis, see 1 minute in for an excellent explanation of how the mast cell interacts with anaphylaxis)

How to use an EPI pen:

The hidden signs of anaphylaxis:

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