Fig. 2
From: Purslane-induced oxalate nephropathy: case report and literature review
Renal biopsy showing oxalate crystallization in Case 1. a Kidney biopsy tissue under hematoxylin and eosin staining (H&E, × 100). b Translucent calcium oxalate crystals in the renal tubules (black arrows) under light microscopy (H&E, × 200). c The same field as b is shown under the polarized light microscope, and the birefringent crystal is visible (× 200)