Fig 1 Phospholipase A2 receptor staining pattern in idiopathic membranous nephropathy. (a) Granular staining for phospholipase A2 receptor (PLA2R) along with glomerular capillary loops in a 6-year-old boy. (b) Granular staining for PLA2R along with glomerular capillary loops in a positive control. (c) No staining for PLA2R in the glomerulus of a negative control.