A patient presents with recurrent kidney stones. The microscopic examination of the urine specimen is shown below. Which of the following is not seen in the urine of this patient?
COMPOSITION SHAPE OF THE STONE Calcium oxalate monohydrate Dumbell shape Calcium oxalate dihydrate Envelope Clcium phosphate Flat shaped prisms Struvite coffin-lid Uric acid Rhomboid Cystine Hexagonal Reference: Harpers illustrated biochemistry 30th edition
cysteine
lysine
Arginine
cystine
Enzymes