For defense against virus attack, body produces:
Correct answer: D. Interferons
- A. Antibodies
- B. Histamines
- C. Antigens
- D. Interferons
Explanation
Interferons are a group of natural proteins that are produced by human cells, they can interfere with viruses that are replicating. Interferon makes antiviral proteins, which block virus reproduction.
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About Circulation
The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.
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