毛细血管床形态立体定量评估DR。
DR was assessed by quantitative morphometry of capillary bed.
动脉将血液由心脏带到毛细血管床，静脉将血液由毛细血管床回流到心脏。
Arteries carry blood away from the heart to the capillary bed while veins return blood to the heart from the capillary bed.
动脉将血液由心脏带到毛细血管床，静脉将血液由毛细血管床回流到心脏。
Arteries carry blood away from the heart to the capillary bed while veins return blood to the heart from the capillary bed.
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