Abstract
The distribution of phosphatases was examined in the epididymis of swamp buffaloes aged 1.5-2 years, where spermatogenic activity in the testis had reached the early primary spermatocyte stage. A granular distribution of acid phosphatase was present in the luminal region of the epithelium of the efferent ductules. In the ductus epididymidis, four zones were identified and all zones showed varying degrees of acid-phosphatase activity in the epithelium, with the most pronounced activity in the apical region and stereocilia of zone II. Alkaline-phosphatase activity occurred along the basal region of the epithelium in zones I, III and IV of the ductus and in the stereocilia of zones I and II. An intense apical reaction was seen in zone II. The efferent ducts were free of this enzyme. Thus, zone II is considered the most active region, having the function of absorption and possibly steroid metabolism.
Published Version
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