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目的 :为阐明高原土著动物适应高原低氧环境的机制提供参考 ;方法 :应用Feret’s直径测量方法 ,对栖息于果洛草原的灰尾兔和鼠兔骨髓红系细胞电镜照片进行了测量研究 ;结果 :灰尾兔骨髓各级幼红细胞的平均直径分别是 :原红细胞为 1 2 .98μm ;早幼红细胞为 1 0 .2 3 μm ;中幼红细胞为 7.5 5 μm ;晚幼红细胞为 5 .49μm ;高原鼠兔骨髓各级幼红细胞的平均直径分别是 :原红细胞为 1 1 .40 μm ;早幼红细胞为 9.8μm ;中幼红细胞为 60 μm ;晚幼红细胞为 4.4μm ;结论 :高原灰尾兔和高原鼠兔骨髓内越幼稚的细胞直径越大 ,在成熟过程中直径逐渐变小。高原灰尾兔骨髓各级幼红细胞直径变化比较平稳 ,高原鼠兔早幼红细胞转变为中幼红细胞阶段直径变化的幅度较大 ,在其它两个阶段直径变化趋向平稳。同时 ,我们观察了两种动物骨髓红系细胞的超微结构。
OBJECTIVE: To provide a reference for elucidating the mechanisms by which indigenous animals adapt to plateau hypoxia in plateau. Methods: The electron micrographs of Erythrocyte erythrocytic cells in gray-tailed and rabbit rabbits perfused in the genus Gollus were measured by Feret’s diameter measurement. Results : The average diameters of erythrocytes in all groups of Eupatorium pulcherrimus were as follows: the original erythrocytes were 12.98μm; the number of premature erythrocytes was 10.22μm; the number of meiotic erythrocytes was 7.55μm; the number of late erythroblasts was 5.49μm; Plateau pika rabbit bone marrow at all levels of the average diameter of erythrocytes were: the original erythrocyte was 11.4 μm; the number of young erythroblasts was 9.8 μm; the number of young erythrocytes was 60 μm; the number of young erythrocytes was 4.4 μm; Conclusion: The more naïve cells in the bone marrow of plateau pikas, the larger the diameter of the cells became and the smaller the diameter became during maturation. The changes of erythrocyte diameter at different levels of gray-tailed rabbit bone marrow were relatively stable. The changes of the diameter of erythrocytes from young plateau to that of immature erythrocytes were relatively large, and the diameter changes tended to be stable in the other two stages. In the meantime, we observed the ultrastructure of erythroid cells in two kinds of animal bone marrow.