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. 2019 May 14;13(1):42–45. doi: 10.1093/ckj/sfz051

FIGURE 3.

FIGURE 3

Spectrophotometry analysis. Calcium oxalate monohydrate infrared (IR) spectrum displays typical absorption bands at 1310 and 777 cm−1. (A) Optical image (circle: polarized crystals). (B) Absorption image. (C) Typical IR spectrum of calcium oxalate monohydrate in a protein tissue (renal biopsy).