The document summarizes the light microscopic, immunofluorescence, and electron microscopic findings for several different kidney diseases: 1. Minimal change disease shows normal or mildly expanded glomeruli and mesangium on light microscopy. Immunofluorescence may show fine IgG deposits in podocytes. Electron microscopy shows diffuse foot process effacement without deposits. 2. IgA nephropathy shows normal or minimally expanded glomeruli and mesangium on light microscopy. Immunofluorescence shows dominant mesangial IgA with C3 deposits. Electron microscopy shows normal epithelial cells and mesangial deposits. 3. Class I lupus nephritis shows normal findings on light microscopy. Immunofluorescence is positive