Light micrograph of a glomerulus (round structure taking up most of the image) with membranous glomerulonephritis, a type of kidney disease. On silver stain, the deposits are seen as innumerable 'holes' (tiny white dots) within the glomerular basement membrane, which is stained black by the sliver stain. Jones silver stained tissue section. Magnification: x400 when printed at 10cm wide.