The velocity and flux of red blood cell (RBC) in villus tip arteriole and capillaries were measured by FITC-labeled erythrocytes and intravital microscopy.

• 利用FITC标记红细胞和活体显微镜方法直接观测并计算小鼠小肠绒毛尖端小动脉和毛细血管内红细胞的流速和流量。