Figure 3.

Electron micrograph of developing glomerular capillary loop. The endothelial cell (En) is large and contains only a few fenestrations at this stage. Only a few, relatively broad foot processes (fp) are present in the podocyte (Po) cell layer. A double basement membrane between the endothelium and podocytes can be seen clearly (arrows). Note the loose mesangial matrix (arrowheads) in the mesangium (M). Reproduced with permission (ref. ³⁶).