. Medical diagnosis for the student and practitioner. Fig. 72.—Uric acid crystals. Upon application of heat they promptly disappear. When nitric acid isadded to a urine rich in urates, a deposit of nitrate of urea is formed. Thedeposited urates are amorphous, excepting only the ammonium urate, which THE EXAMINATION OF THE URINE 233 occurs in ammoniacal urine as the so-called thorn-apple crystals (see Fig. 74). a. Fig. 73 —a. Cystin. b. Leucin.

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiagnos, bookyear1922