The glomerular mesangium.
D000818:Animals; D000941:Antigens / Q000032:analysis; D001485:Basement Membrane / Q000648:ultrastructure; D004727:Endothelium / Q000648:ultrastructure; D006652:Histological Techniques; D006801:Humans; D007606:Juxtaglomerular Apparatus / Q000648:ultrastructure; D007678:Kidney Glomerulus / Q000276:immunology / Q000378:metabolism / Q000648:ultrastructure*
D000941:Antigens