It is deduced that the change of osmotic fragility may be related to the changes of the membrane structure and the geometric shapes (the ratios of surface areas tovolumes) of RBCs during their aging.

• 推论其渗透脆性的变化可能与红细胞膜结构及红细胞几何形状（即红细胞表面积与体积之比）的变化有关。