卡哈尔在用胚胎观察神经组织时，发现轴突和树突是从胞体上生出的。
Cajal examined nervous tissue from embryos, and noticed that the axon and dendrites grow out of the cell body of the neuron.
这导致了卡哈尔建立他的动态极化法则，这个法则表明，信息在神经元上是单向传递，从树突，经过胞体，到达轴突。
This led Cajal to formulate the law of dynamic polarization, according to which information flows in one direction through a neuron, from the dendrites, through the cell body, to the axon.
这导致了卡哈尔建立他的动态极化法则，这个法则表明，信息在神经元上是单向传递，从树突，经过胞体，到达轴突。
This led Cajal to formulate the law of dynamic polarization, according to which information flows in one direction through a neuron, from the dendrites, through the cell body, to the axon.
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