Figure 4

More samples of BR structures with double staining of Na⁺-K⁺-ATPase (red) and myelin basic protein (green), showing different types of morphologies. Some are more concentrated round compact type while others are more extended diffuse type. Again, many sensors may share an axon, forming a unit. On the right is the diffuse type found in the middle of the left picture denoted by an arrow head. Two white arrows indicate myelinated axons for a compact type (left) and a diffuse type (right), respectively. The scale bar is 100 µm.