Phagocytes kill pathogens before they can multiply and damage the body.
- Neutrophils are the most common phagocytes. They have multi lobed nucleus and are manufactured in bone marrow. they travel around the blood. They're short lived but will be released in large numbers in case of infections
- Macrophages are larger and manufactured in bone marrow. commonly found in lymph nodes. they engulf infections and then display the antigens.
Phagocytes work because they engulf and destroy pathogens. pathogens are noticed by antigens on its membrane. Antibodies attach to foriegn antigens. the receptor binds to antibodies.
infected cells release histamine which attracts neutrophils. this may cause swelling. Macrophages play an important role in specific response to disease - immune response. which is an activiation of lymphocytes in the blood to help fight disease
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