Cohesion of horny cells during comedo formation.

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Abstract
Cohesion between horny cells was studied in experimentally induced comedones from the rabbit''s external ear canal. It occurred in 2 different ways: initially, by the persistence of desmosomes and desmosomal bodies (fusiform electron dense bodies) which loosely held the horny cells together; later, and to a lesser extent, by tight junctions, which tightly bound the horny cells together. A gradual decrease in numbers of membrane coating granules was observed.