Tandler Bernard, Phillips Carleton J
Geriatric Research Education and Clinical Center, Louis Stokes Department of Veterans Affairs Medical Center, Cleveland, Ohio, USA.
Eur J Morphol. 2002 Oct;40(4):253-6. doi: 10.1076/ejom.40.4.253.16695.
The submandibular gland of the white-winged vampire bat, Diaemus youngi, was examined by electron microscopy. Unlike typical submandibular glands, those in Diaemus have only one type of secretory cell in their endpieces, namely, serous cells. These serous cells are conventional in structure, with an extensive rough endoplasmic reticulum, scattered dictyosomes, and numerous secretory granules. The endpiece lumina, as well as intercellular canaliculi, are fitted with numerous microvilli, which also are present on the otherwise unremarkable intercalated duct cells. Striated ducts are of conventional morphology, but have a brush border-like array of microvilli on their luminal surface. These cells resemble those in the submandibular gland of the common vampire bat, Desmodus rotundus. The presence of an abundance of microvilli in the salivary glands in the two vampire bat species (and their absence from chiropteran species that consume other types of diets) is a strong indication that these structures play a significant role in dealing with the problems posed by a sanguivorous diet.
通过电子显微镜对白翅吸血蝠（Diaemus youngi）的下颌下腺进行了检查。与典型的下颌下腺不同，Diaemus的下颌下腺终末部只有一种分泌细胞，即浆液性细胞。这些浆液性细胞结构常规，具有广泛的粗面内质网、散在的高尔基体和大量分泌颗粒。终末部管腔以及细胞间小管都有许多微绒毛，在其他方面不显眼的闰管细胞上也有微绒毛。纹状管形态常规，但在其管腔表面有刷状缘样的微绒毛排列。这些细胞类似于普通吸血蝠（Desmodus rotundus）下颌下腺中的细胞。两种吸血蝠唾液腺中存在大量微绒毛（而以其他类型食物为食的翼手目物种中不存在），有力地表明这些结构在应对吸血饮食带来的问题中发挥着重要作用。
