Burton D S, Maronpot R R, Howard F L
Lab Anim Sci. 1979 Oct;29(5):642-4.
Kidneys from 1806 Wistar rats were examined grossly for hydronephrosis and ureteral dilation. Hydronephrosis was seen more often on the right side (11%) than the left (0.3%). Overall frequency of hydronephrosis in males (181/1305) was greater than in females (23/501), and the frequency was statistically greater in male rats aged 5,6,8 and 9 weeks than in age-matched females.
