或者，化学信号是危险，它们就会逃跑吗？
例如，触发了最终形状的机制可能是一个化学信号。
The mechanism that triggers the final form could be a chemical signal, for instance.
这些化学信号分子引起炎症，其中多数因子具有抗感染或损伤修复的作用。
These are chemical messengers that cause inflammation, most often to fight infection or repair injury.
这些化学信号分子引起炎症，其中多数因子具有抗感染或损伤修复的作用。
These are chemical messengers that cause inflammation, most often to fight infection or repair injury.
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