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Table 2. Hex expression in the different cell types and regions of the epididymis during postnatal development

Region*   Postnatal age   Cell Type   IS   IZ/Cap/PCor   DCor   Cau   Day 7   Principal   -   -   -   -     Narrow/clear   -   -   -   -     Basal   -   -   -   -   Day 21   Principal   -   -   -   -     Narrow/clear   ++   ++   ++   ++     Basal   -   -   -   -   Day 29   Prinicpal   -   +   -   -     Narrow/clear   ++   ++   ++   ++     Basal   ++   ++   ++   ++   Days 39, 49, 56   Principal   +   ++   +   +     Narrow/clear   ++   ++   ++   ++     Basal   ++   ++   ++   ++   *Regions of the epididymis. IS indicates initial segment; IZ, intermediate zone; Cap, caput; PCor, proximal corpus; DCor, distal corpus; Cau, cauda. For principal cells, ++ indicates that many intensely reactive lysosomes are evident in their cytoplasm; +, only a few reactive lysosomes are present; -, absence of reactivity in lysosomes. For narrow/clear and basal cells, ++ indicates that these cells are intensely reactive. Although qualitative in nature, these data give an overall impression of the status of reactivity based on consistent findings from at least 4 slides for each animal of each experimental group in the case of the different cell types of each epididymal region.   Narrow cells are only present in the IS and IZ regions, whereas clear cells are present in the caput, corpus, and cauda regions.

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