Fig. 4.

Interstitial Cajal-like cellular extensions were observed in the lamina propria. It was observed that the cytoplasmic extensions demonstrate local enlargements along their course (heads of the arrows) and curled as a labyrinth. It was also observed that the extensions are connected to each other with connection complexes in some areas (arrows). Hemidesmosome formation, which was observed along the collagen fibres and extensions, was demonstrated.