[Scanning electron and light microscopic studies of the surface epithelium of the rete testis and epididymis of the boar. I. Rete testis and efferent ducts].
The use of the scanning electron microscope gave a three dimensional representation of the epithelial surface. Additionally, light microscopy revealed the representative structure of the epithelium. The rete testis showed a single layer of cubic epithelial cells. Short and dense microvilli were found on the surface. Sporadically a single, cilia-like structure was recognized. An extratesticular rete testis was identified. The flowing transition of the epithelium between the rete testis and the efferent ductuli occurred at different levels, so that both kinds of epithelial structures were recognized in the same area. The efferent ductuli were composed of a single columnar epithelium consisting of two cell types, principal cells and ciliated cells. The ciliated cells were recognized by their cilia protruding into the lumen. The principal cells showed microvilli on their surface and bleblike apical protrusions which erupt into the lumen.
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D000818:Animals; D004822:Epididymis / Q000648:ultrastructure*; D004848:Epithelium / Q000648:ultrastructure; D008297:Male; D008855:Microscopy, Electron, Scanning; D012152:Rete Testis / Q000648:ultrastructure*; D013552:Swine / Q000033:anatomy & histology*; D013737:Testis / Q000648:ultrastructure*
Rasterelektronen- und lichtmikroskopische Untersuchungen des Oberflächenepithels von Rete testis und Nebenhoden beim Eber. I. Rete testis und Ductuli efferentes.