洋葱的遗传信息有16GB，人类更少只有1.5GB。但生命的本质，从来不是静态的DNA物质，而是流动不息的信息交换。在细胞深处，递质与受体的信号传递，看似只是一场机械嘈杂的化学对白，却最终涌现出了生命的鲜活与秩序。
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