Abstract
Specific cellular, subcellular and acellular components of the rat testis including the capsule, the peritubular tissue (tunica propria) and the lymphatic endothelium were analyzed using morphometric techniques at cellular and subcellular levels to yield volume and surface area data. These data were integrated with previously published data for other cellular components of the rat testis to provide information about the volumetric composition for virtually every component of this organ. For major cell types (Leydig, Sertoli, myoid cells and germ cells) the data are expressed to the subcellular level in terms of volume and, in some instances, surface area. Graphic portrayals of testis constituents are used for rapid visual understanding of testis structure. The data presented herein are useful in conjunction with biochemical data to describe physiological properties of cells and cell components and also for understanding how structure differs under experimental and in pathological situations.
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