Davis L E, Schmidt-Nielsen B, Stolte H
J Morphol. 1976 Jul;149(3):279-326. doi: 10.1002/jmor.1051490302.
The anatomy and ultrastructure of the lizard kidney (Sceloporus cyanogenys) have been studied by light and electron microscopy. The number of glomeruli was counted in serial sections and estimated to be 2,000 (in the two kidneys). Beginning with the glomerulus and Bowman's capsule the nephron segments are sequentially: (a) proximal tubule; (b) intermediate ciliated segment consisting of a proximal and distal part; (c) distal tubule, which can be divided into two segments, followed by (d) connecting tubule and (e) initial collecting duct. The initial collecting ducts from several nephrons open into the collecting duct. Tubular epithelium in this lizard has similarities to that of other reptiles. The lateral borders do not overlap like in mammals, but interdigitate by fingerlike projections. The length of the nephron segments was measured in disected tubules and the diameter was measured on light and electron micrographs. From these measurements estimates of inner tubular surface area were made. Together with data from physiological studies (Stolte et al., '76; Schmidt-Nielsen, '76) the estimated surface area was used to calculate transport rates per unit area across the epithelium. Comparisons of structure and transport rates per unit area across the epithelium. Comparisons of structure and transport rates were made between S. cyanogenys and other reptiles and mammals.
利用光学显微镜和电子显微镜对蜥蜴（蓝斑强棱蜥）的肾脏解剖结构和超微结构进行了研究。通过连续切片对肾小球数量进行计数，估计为2000个（两侧肾脏）。从肾小球和鲍曼囊开始，肾单位各部分依次为：(a)近端小管；(b)由近端和远端部分组成的中间纤毛段；(c)远端小管，可分为两段，接着是(d)连接小管和(e)初始集合管。来自几个肾单位的初始集合管汇入集合管。这种蜥蜴的肾小管上皮与其他爬行动物的相似。其侧缘不像哺乳动物那样相互重叠，而是通过指状突起相互交错。在解剖的小管中测量肾单位各部分的长度，并在光学显微镜和电子显微镜照片上测量其直径。根据这些测量结果估算肾小管内表面积。结合生理学研究数据（斯托尔特等人，1976年；施密特-尼尔森，1976年），利用估算的表面积计算单位面积上皮的转运速率。比较了蓝斑强棱蜥与其他爬行动物和哺乳动物的结构及单位面积转运速率。
