Loo S K
J Anat. 1977 Feb;123(Pt 1):135-45.
Electron microscopy of the olfactory epithelium of two prosimian primates, the trees shrew and slow loris, and two simian primates, the macaque and gibbon, has shown that this epithelium consists of three cell types, receptor cells, supporting cells and basal cells, as in other mammals. Receptor cells were ciliated in all the animals investigated except the tree shrew, where, in addition to ciliated receptors, nonciliated receptors bearing only microvilli were occasionally present. Developing receptor cells containing numerous centrioles between nucleus and cell surface were occasionally observed and these cells had poorly developed olfactory knobs and few mitochondria. The olfactory epithelium was similar in morphology in all four species, except that supporting cells showed progressively more numerous, more slender and longer microvilli on their distal surface from tree shrew to slow loris to macaque to gibbon. This may imply a more discriminatory surface in the higher primates in view of the close relationship of these microvilli to the receptor cell surface.
对两种原猴亚目灵长类动物（树鼩和懒猴）以及两种猴亚目灵长类动物（猕猴和长臂猿）的嗅觉上皮进行电子显微镜观察显示，与其他哺乳动物一样，这种上皮由三种细胞类型组成，即受体细胞、支持细胞和基底细胞。在所研究的所有动物中，除了树鼩外，受体细胞均有纤毛。在树鼩中，除了有纤毛的受体外，偶尔还会出现仅带有微绒毛的无纤毛受体。偶尔会观察到发育中的受体细胞，其细胞核与细胞表面之间有许多中心粒，这些细胞的嗅觉小球发育不良，线粒体也很少。除了支持细胞在其远端表面从树鼩到懒猴再到猕猴最后到长臂猿显示出越来越多、越来越细长且越来越长的微绒毛外，这四个物种的嗅觉上皮在形态上相似。鉴于这些微绒毛与受体细胞表面的密切关系，这可能意味着高等灵长类动物的表面具有更强的辨别能力。
