basophils
Basophils are a type of white blood cell, also known as leukocytes, that are involved in the immune response and play a role in allergic reactions
Basophils are a type of white blood cell, also known as leukocytes, that are involved in the immune response and play a role in allergic reactions. They are one of the least common types of white blood cells, making up only about 0.5-1% of the total white blood cell count.
Basophils are characterized by the presence of large, dark blue granules in their cytoplasm. These granules contain various chemical mediators, such as histamine, heparin, and cytokines, which are released upon activation. Histamine is an important mediator involved in allergic reactions and plays a role in the dilation and increased permeability of blood vessels, contributing to the characteristic symptoms of allergies like redness, swelling, and itching.
Basophils are primarily involved in the innate immune response, particularly in parasitic infections and hypersensitivity reactions. When an allergen is encountered, basophils become activated and release their granules, which trigger an inflammatory response. They also play a role in the recruitment of other immune cells, such as eosinophils and T cells, to the site of infection or inflammation.
In addition to their involvement in allergic reactions, basophils also participate in the immune response against helminth parasites, which are large parasitic worms. Basophils are capable of recognizing and directly killing these parasites through the release of toxic substances, such as major basic protein, eosinophil peroxidase, and reactive oxygen species.
To summarize, basophils are a type of white blood cell that are involved in the immune response and play a role in both allergic reactions and the defense against parasitic infections. Their ability to release various chemical mediators and recruit other immune cells makes them an important component of our immune system.
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