Stage III Glomerulonephritis on Electron Microscopy This image shows acellular scanning EM from a biopsy with membranous glomerulonephritis, stage III! There is more extensive GBM bridging over the surface of reticular GBM imparting a smooth surface. Dr. Stephen Bonsib via Arkana Laboratories @arkanalabs #membranous #glomerulonephritis #MGN #stage3 #GBM #ElectronMicroscopy #SEM #clinical #nephrology #pathology