………are found especially in the mucous membrane, standing guard against parasites and allergens
Eosinophils
The cells that are found especially in the mucous membrane, standing guard against parasites and allergens are called mast cells. Mast cells are a type of white blood cell that are involved in the body’s immune response. They are present in tissues that are in contact with the external environment, such as the skin, the respiratory tract, and the digestive system.
Mast cells play an important role in the immune system by releasing various chemicals when they are activated. These chemicals can cause inflammation, attract other immune cells to the area, and help to neutralize or eliminate invading pathogens. When an allergen enters the body, mast cells release histamine, which causes the symptoms of an allergic reaction, such as itching, swelling, and mucus production.
In addition to their role in the immune system, mast cells are also involved in wound healing, tissue repair, and blood vessel formation. They are a critical component of the body’s defense against parasites, as they release toxic substances that can kill parasites on contact. Overall, mast cells play a crucial role in protecting the body against harmful invaders and maintaining the integrity of the tissues.
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