Pizza is a common fast food category in the United States, with chains such as Papa John's, Domino's Pizza, Sbarro and Pizza Hut. Menus are more limited and standardized than in traditional pizzerias, and pizza delivery, often with a time commitment, is offered.
Leucine crystals in Urine. 1  Leucine crystals are abnormal in urine.  Appearance: yellow-brown spheroids with concentric rings around the outer edge and radial striations in the center.
Micrograph showing casts in a kidney biopsy using PAS stain. Hyaline casts are PAS-positive (dark pink/red, right of image). Myelomatous casts are PAS-negative (pale pink, left of image) Urinary casts are cylindrical structures produced by the kidney and present in the urine in certain disease states. They form in the distal convoluted tubule and collecting ducts of nephrons, then dislodge and pass into the urine, where they can be detected by microscopy.