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Why do people get cancer? The human body carries the proto-oncogene. When the proto-oncogene is stimulated by external physical or chemical carcinogens, it becomes cancerous and people get cancer. Gene therapy refers to the introduction of a foreign normal gene into a target cell to
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After the spring, the temperature generally rises. In fine weather, the walls and soil in the shed will store a lot of heat during the day. After the shed is put in the evening, this heat will gradually be released, making the night temperature too high, c
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