問題詳情

44. How did the release of the chemical norepinephrine affect the melanocyte stem cells in the body?
(A) Melanocyte production was reduced in the cells.
(B) The melanocyte stem cells were highly activated.
(C) Norepinephrine destroyed the melanocyte cells.
(D) Norepinephrine blocked the flow of melanocyte.

參考答案

無參考答案

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