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Ultrastructure of the Bull Seminiferous Tubule Supporting Cells with Special Consideration of the Cell Junctions

This study represents an electronmicroscopic examination of seminiferous tubule epithelium of the bull, with special attention to the cell types and junctional complexes between cells which contribute to the blood‐testis barrier. In general seminiferous epithelium of the bull resembles that of other animals with some alterations in supportive cell types and organization of junctional complexes between epithelial cells. These differences are illustrated and discussed in regard to their possible functional significance.