Mast cells

Mast cells are a type of white blood cell that play a crucial role in the immune system. They are primarily found in tissues throughout the body, particularly near blood vessels and nerves. When the body detects allergens or infections, mast cells release chemicals like histamine, which help to initiate inflammation and protect against threats. This release can also lead to allergic reactions, such as sneezing or itching. While they are essential for fighting off pathogens, overactivity of mast cells can contribute to allergies and other conditions.