Anatomy and histology of the musk shrew (Suncus murinus) prostate

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Abstract
Gross anatomy and the light and electron microscopic characteristics of the musk shrew (Suncus murinus, Insectivora) prostate are described. The prostate is a pair of compound tubuloalveolar glands with one main excretory duct for each gland. Each gland is divided into ventral and dorsal lobes. The tubuloalveoli are larger in diameter and the secretory cells are lower in the ventral than in the dorsal lobes. Probable spontaneous release of secretory granules and accumulation of secretory material in secretory lumina are only observed in the ventral lobes. Secretory material is often crystallized in the secretory lumina. The epithelium of excretory ducts consists of mucous-type secretory cells and the boundary between this epithelium and the glandular epithelium is complex. The glandular epithelium consists of secretory and clear cells. This report illustrates that the structure of the prostate of musk shrew is unique among mammals.