There were some shortcomings in the present experiments as investigating the formation of urinary stone because the biologic membrane is mixed protein phospholipid monolayers and the system in which urinary stone formed in vivo is fluid 由于存在以下两个因素: 1 )生物细胞膜是磷脂和蛋白质形成的复合膜; 2 )草酸钙结石是在流动的尿液中形成的。