Effect of aqueous myrrh extract (AME) on histological structure of rat kidney. A, Renal cortex of CTR rats showing normal Malpighian corpuscle containing the glomerulus (G) and Bowman’s space (BS), proximal convoluted tubules (P), and distal convoluted tubules (D). B, Renal medulla of CTR rats showing normal collecting tubules (CT). C and D, Renal sections of rats treated with AME only showed no significant alterations in the structure of the renal cortex (C) and medulla (D). Scale bar =500 µm; Stain: H & E. Magnification: 400 ×.