All cells touch the basement membrane, but only the taller cells reach the lumen. 所有细胞基部均与基膜相接处，只有高的细胞顶部到达管腔表面。
It was the podocyte that firstly formed basement membrane, and then the endothelial cells continued.Fusion of them led to the formation of a thick glomerular basement membrane. 足细胞下先出现电子密度较低的基膜，随后内皮细胞下才出现基膜，以后，二者融合形成一层电子密度较高的血管球基膜。
