🔬general biology i review

Basophil

Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025

Definition

Basophils are a type of white blood cell involved in the immune response. They release histamine and other chemicals during allergic reactions and inflammation.

5 Must Know Facts For Your Next Test

  1. Basophils make up less than 1% of the total white blood cell count.
  2. They contain granules that are stained dark blue with basic dyes.
  3. Basophils play a crucial role in the body's defense against parasites.
  4. They release heparin, which prevents blood clotting at the infection site.
  5. Basophils have receptors for IgE antibodies, which are important in allergic responses.
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