Studies on the eyes of gars (Lepisosteidae) with special reference to the tapetum lucidum.
Studies on the eyes of gars (Lepisosteidae) with special reference to the tapetum lucidum.
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对雀鸟（Lepisosteidae）眼睛的研究，特别是绒毡层。
DOI：
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发表时间：
1973
影响因子：
1.4
通讯作者：
H. Arnott
中科院分区：
文献类型：
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作者：
J. Nicol;H. Arnott
加尔斯（Lepisosteus）的眼睛具有黄色的透明绒毡层，位于色素上皮的突起中。一个黄色的反射色素参与，封闭在绒毡层球，每个直径约240纳米。 视网膜运动发生：在黑暗中（或昏暗的光线下），黑色视网膜色素缩回，暴露出绒毡层，杆缩短;在光线下，色素向内迁移，使绒毡层模糊，杆伸长。绒毡层色素溶于水、稀酸和碱，不溶于有机溶剂;重金属使其不溶于水;它用用于使酚类化合物（铁氰化物;硝酸氨银）显色的试剂染色。描述了提取色素的方法，并示出了紫外/可见光谱。折射率高（n23 1.59），与绒毡层球的大小和排列相结合，有利于后向散射。色素上皮细胞的第二个值得注意的特征是...
Eyes of gars (Lepisosteus) possess a yellow tapetum lucidum which is located in processes of the pigment epithelium. A yellow reflecting pigment is involved, enclosed in tapetal spheres each about 240 nm in diameter. Retinomotor movements take place: in darkness (or dim light) the black retinal pigment retracts, exposing the tapetum, and the rods shorten; in the light the pigment migrates inwards, obscuring the tapetum, and the rods elongate. The tapetal pigment is soluble in water, dilute acid, and alkali, and insoluble in organic solvents; it is rendered insoluble (to water) by heavy metals; and it stains with reagents used to visualize phenolic compounds (ferric–ferricyanide; ammoniacal silver nitrate). A method of extracting the pigment is described, and the ultraviolet/visible spectrum shown. The refractive index is high (n23 1.59) and that, in conjunction with the size and arrangement of the tapetal spheres, is conducive to backscatter. A second noteworthy feature of the pigment epithelial cells is ...