Figure 7 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 7. (A) In the active stage, the prostatic gland has a tubule-alveolar arrangement, with high columnar secretory cells that form prostatic acini (asterisk). (B) During the maturation stage, the cells have a basophilic granular cytoplasm and do not exhibit an acinar arrangement (asterisk). (C) The vas deferens (vd) is a thin filiform tube characterized by a small lumen delimitated by a simple cuboidal epithelium. (D) The vas deferens epithelial cells are supported by a connective tissue layer externally covered by a relatively thick circular muscle layer (arrow). Haematoxylin-eosin stained. Scale bar = 50 µm.