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. 2018 Oct 10;11:367. doi: 10.3389/fnmol.2018.00367

FIGURE 3.

FIGURE 3

Tight junctions are not restricted to direct axonal wrappings but occur on membranes of larger processes (a), or surrounding several axons (b). In contrast, myelin in optic tectum depicted in (c) shows thin lamellae and few tight junction strands (arrows) oriented in axonal direction. Top panels represent overviews, higher magnifications areas marked by black frames are shown below. Scale bars as indicated.