髓放线
- 网络medullary ray;medullaryrays
髓放线-
髓放线内有近端小管直部和远端小管直部。输尿管部分梗阻与肾小管间质纤维化
The medullary ray contains the straight parts of proximal tubules and distal tubules . Renal fibrosis caused by partial unilateral ureter obstruction
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肾脏皮质内可见皮质迷路和髓放线。
In cortex , cortical labyrinths and medullary rays exist .
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结论：出生后小鼠肾脏皮质中的生肾区、肾小体、肾小管及髓放线的细胞增殖规律是由高逐渐降低的，直至成年完全停止。
The PCNA-positive cells were not found in adult renal cortex . Conclusion : Proliferative activity decreased gradually from high to low in subcapsular zone , glomeruli , tubules and medullary rays during postnatal development .