Flórez-Cossio T J
Anat Anz. 1975;137(1-2):35-55.
The development of the notochord of the albino-rat takes place in the period between 8 days 10 hours and 9 days 3 hours. The notochord appears as a thickness of the entoderm in the ventrally region of the antimesometrial cavity. At the stage of 8 days 10 to 14 hours p. c. there are observed differenciated processes of the primitive flattened entodermal epithelium to high cylindrical cells which form a plate. The closed structure of the basement membranes round the notochord of the rat, as it is observed lightmicroscopically reveals new aspects in connection of the frequent discussed supposition the notochord possibly to be a factor for the origin of other structures e.g. the somites. The developmental mode of the notochord of the albino-rat differs from that of the mouse.
白化大鼠脊索的发育发生在8天10小时至9天3小时之间。脊索在反中膜腔腹侧区域表现为内胚层的增厚。在妊娠8天10至14小时的阶段，观察到原始扁平内胚层上皮细胞分化为高柱状细胞，形成一个板层。从光学显微镜下观察到，大鼠脊索周围基底膜的封闭结构揭示了一些新的方面，这与经常讨论的假设有关，即脊索可能是其他结构（如体节）起源的一个因素。白化大鼠脊索的发育模式与小鼠不同。
