Ultrastructure of the descending rubral fibers in lamina V of the cat trigeminal subnucleus caudalis& hrp labeling and degeneration study 猫三叉神经脊束核尾侧亚核第V层中红核下行纤维终末的超微结构特征&溃变及HRP电镜法
Projections of the corticospinal tract to the long descending propriospinal neurons in the rabbit ── lm and EM study by combined HRP retrograde transport with anterograde degeneration technique 家兔皮质脊髓束向脊髓长下行固有束神经元的投射&HRP逆行追踪结合顺行溃变技术的光镜和电镜研究
The increase of population accompanied with the uneven distribution of water resources has resulted in the overuse of water and the abrupt descending of groundwater table, which caused the degeneration of ecosystem. 由于人口的增加,流域地表水资源分配不均,水资源开发过度,地下水位急剧下降,造成流域生态系统退化。