Ключевые слова: alkaline, ammonium, biology, block, calculi, caliceal, chemical, clogged, dialysis, disease, disorder, failure, filter, focus, health, healthcare, internal, kidney, macro, magnesium, medical, medicine, medium, pain, painful, phosphate, problem, renal, science, sharp, soft, spheres, stone, strong, ureter, ureterolithiasis, urethra, urinary, waste,