7.Now, once hormones are sent into the bloodstream, they travel around until they reach the right target, usually by latching onto a specific receptor on a certain type of cell, and they deliver their chemical message.
一旦激素被输入到血液中,它们就会四处旅行直到它们达到正确的目标,通常是通过锁定特定类型细胞上的特定受体,然
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