1. Quiz Page February 2013 American Journal of Kidney Diseases
Ying-Tang Wang, MD, Chih-Chien Sung, MD, Seng-Tang Wu, MD, Shih-Hua Lin, MD 
American Journal of Kidney Diseases 
Volume 61, Issue 2, Pages A26-A29 (February 2013)
DOI: /j.ajkd
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2. Figure 1
(A) Sonogram of the right kidney; (B) kidneys, ureters, and bladder radiograph; (C) intravenous urography after a duration of 120 minutes.
American Journal of Kidney Diseases  , A26-A29DOI: ( /j.ajkd )
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3. Figure 2
Infrared spectrophotometry shows ammonium group with a peak at 1,385 cm−1 (black arrow) and urate with 2 sharp sawtooth peaks at 780 and 740 cm−1 (red arrows); light microscopy (original magnification, ×400) in the inset box shows ammonium urate with faintly brown-tinged radially striated crystals (yellow arrows).
American Journal of Kidney Diseases  , A26-A29DOI: ( /j.ajkd )
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