| Type | MGI:General | Description | mice under 14 days of age show unilateral or bilateral hydronephrosis while almost all mice older than 14 days show severe bilateral hydronephrosis about 66% of mice have more severe defects in the right kidney, about 23% have more defects in the left kidney and 11% have both kidneys equally affected however, in most cases there does not appear to be a physical blockage of urine transport |
