Which feature best distinguishes adaptive immunity from innate immunity?
Correct answer: A. It responds specifically to particular antigens
- A. It responds specifically to particular antigens
- B. It is present as an intact skin barrier
- C. It acts immediately against many unrelated threats
- D. It includes protective secretions on mucous membranes
Explanation
Adaptive immunity recognises particular antigens and develops responses involving specific lymphocytes. Skin, mucous membranes and rapid nonspecific responses are components of innate immunity.
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About Blood and Immunity
Blood and immunity covers plasma, red blood cells, white blood cells, platelets, haemoglobin, blood groups and haemostasis. It explains innate and adaptive defenses, antibodies, lymphocytes, inflammation, vaccination and immune memory, with a distinction between active and passive immunity and between antigen and antibody.
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