A patient receives ready-made immunoglobulin after exposure to hepatitis B. Which feature describes this protection?
Correct answer: C. It provides immediate temporary protection
- A. It develops slowly and lasts lifelong
- B. It uses the patient's memory cells
- C. It provides immediate temporary protection
- D. It requires the patient to produce new antibodies first
Explanation
Administered immunoglobulin supplies antibodies directly, giving passive immunity that acts quickly but usually provides temporary protection. It does not stimulate the same durable immune memory produced by active immunisation.
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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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