Indicate the characteristics of neutrophils. Multiple select question. Enhance inflammation Enter tissue later in infection Stimulate chemotaxis of other WBCs Part of innate immunity. Release of antibodies
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Susceptibility to severe microbial infections can be caused by the inability of neutrophils to respond to attracting molecules known as: chemotaxins hemolysins ferritins lysozyme These immune cells kill by releasing molecules into virally infected cells or cancer cells that induce apoptosis (cell death): macrophages complement dendritic cells NK cells Mast cells in the tissues release __________which dilates blood vessels, bringing more blood to the tissues that have become damaged or infected. C-reactive protein membrane attack complex histamine C5b Once pathogens penetrate through physical and chemical barriers, innate immune protective responses encountered by the pathogens include: Fever Phagocytes including macrophages and neutrophils Complement activation All of the above Normal flora like Lactobacillus found in the vagina provide protection against pathogens by: Making reactive oxygen intermediates Secreting antibiotics Making toxins that kill pathogens Producing acidic metabolic products that reduce the pH, inhibiting growth of pathogens Which of the following characteristics best describes dendritic cells? They release cytokines that increase the permeability of the blood vessels Once they mature, they circulate in the bloodstream where they interact with antigens They produce antibodies They serve as a bridge between innate and adaptive immune responses, carrying antigens from the tissues to T cells in the lymph nodes
Adi S.
CHOOSE ALL THAT APPLY. Neutrophils are characterized by which of the following? Select one or more: a. They are the most active white cells in response to tissue destruction by bacteria b. They produce antihistamines c. They release heparin d. They perform Phagocytosis e. They release the enzyme lysozyme after engulfing particles
Madhur L.
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