details of stain localization and comparison of these results with other ultrastructural data suggest that the stain is specific for the node of ranvier and the axon initial segment , and are consistent with the idea that the axolemma at these sites may be structurally different from the cell membrane in other regions of the neuron , including paranodal and internodal regions of the axon .
C0027882
neuron
C0004461
axon