نتایج جستجو برای: urinary calculi
تعداد نتایج: 128125 فیلتر نتایج به سال:
In Experiment 1, groups of thirty 6-wk-old male and female F344 rats were given diets containing 0 (control) or 3% uracil for 104 wk. In the uracil-treated groups, carcinomas, in particular transitional cell carcinomas, developed in the urinary bladder of 90% of the males and 19% of the females. Squamous cell carcinomas also developed in 10% of the males, but not in females. Striking findings w...
In a colony of germfree rats 50 per cent of the males had urinary calculi composed of calcium citrate and calcium oxalate. Genetically closely related conventional animals on the same sterilized diet did not present a single case of stone formation. The tendency to calculus formation disappeared when germfree animals were contaminated with the intestinal flora from conventional rats. The calcul...
THE causes and mechanisms of urolithiasis are even nowadays not well understood. An increased concentration of crystalloids in urine as happens, for· example, in dehydration is one of the factors frequently cited. Randall (1937) drew attention to the importance of urinary tract infections as an initiating factor, and proposed that some stones started off as a plaque-like precipitate on the muco...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید