They stain the mouse's brain tissue, so that different kinds of synapses show up in different colors.
他们对老鼠的脑组织进行染色，这样不同种类的突触就可以呈现不同颜色。
2
The dendrites of the TCP neurons usually make axodendritic synapses and dendrodendritic synapses with axonal terminals and presynaptic dendrites, respectively.
TCP 神经元的树突通常分别与轴突末端和突触前树突形成轴突突触和树突突触。
3
Bacteria, of course, don't have synapses or nerve cells.