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[高清字幕]Health Report - Influenza Disarms the Body's First Line of Defense

来源:慢速英语   时间:2013-12-11 09:36:29

Health Report - Influenza Disarms the Body's First Line of Defense

When the virus attacks, the body’s natural defenses produce white blood cells. Now biologists have discovered how the virus can disarm those white blood cells, known as B cells.

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