Fig. 1

Light and electron microscopy Olympus BX53 and cellSense (Olympus Corporation, Center Valley, PA, USA) is used to capture the images. The images were obtained with eyepiece at 10X magnification and objective at 10X and 20X. The brightness and contrast were adjusted by using PowerPoint (Microsoft, Redmond, Washington, USA). No other downstream processing or averaging were applied to the images to enhance the resolution. A Haematoxylin and eosin (H&E) staining × 100: Two cores of kidney cortex and medulla show acute tubular injury and cystic dilatation of the distal tubules/ collecting ducts in the medulla. B Periodic Acid-Schiff (PAS) staining × 200: A glomerulus without segmental sclerosis or proliferative features. C Trichrome × 100: Mild tubular atrophy and interstitial fibrosis. D Electron microscopy × 7140: Diffuse podocyte foot process effacement with microvillous appearance.