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What causes swelling, redness, and itching caused by an allergic reaction? Harmful Pathogens? T Cells? V Cells? or Histamine?

User Harvey Lin
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2 Answers

2 votes
it is histamine, the person above is correct :)
User Tristan Brotherton
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5 votes
I think it’s histamine

Hope it helped and have a nice day :)
User Maayan
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