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. 2008 May 5;8:35. doi: 10.1673/031.008.3501

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This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Shape and general morphology of the receptaculum seminis and ductus receptaculi in female T. commodus. The duct of the receptacular complex (A) may be subdivided into three regions, i. e. a region proximal to the receptaculum (Region I, B), a middle glandular region (Region II, C), and a terminal region (Region III, D). As already shown by the simplified illustrations, Region I and III includes an epithelium with only one cell type, while in Region II the epithelium is composed of two cell types fulfilling specific functions.