Membranoproliferative Glomerulonephritis Type I

Membranoproliferative Glomerulonephritis Type I •Electron photomicrograph showing several capillary loops. •A number of the capillary loops show two basement membranes (arrowhead). •The external capillary basement membrane is the original native basement membrane. •The internal capillary basement membrane is a newly formed basement membrane. •Between the two basement membranes is cytoplasm of mesangial cells that have extended beyond the confines of the mesangium. •The newly formed internal basement membrane is a product of the mesangial cell and the endothelial cell. (Description By:H. Yamase, M.D. ) (Image Contrib. by: UCHC )