eli5:Why does it swell when insects bite. 722 viewsJanuary 3, 2024 Question91.57K October 29, 2020 0 Comments eli5:Why does it swell when insects bite. In: Biology 2 Answers ActiveNewestOldest Anonymous Posted October 29, 2020 0 Comments Due to the bite, there will be an immune reaction. The immune cells release histamine. The histamine makes your blood vessels more permeable for water. Therefore you get a local swelling around the bite. You are viewing 1 out of 2 answers, click here to view all answers. Register or Login
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