Lysosomal stability, superoxide dismutase and zinc deficiency in regenerating rat liver.

1. Lysosomal stability was slightly increased in regenerating livers from rats receiving a zinc-deficient (less than 0.5 mg/kg) diet for 10 d before surgery. 2. The activity of superoxide dismutase (EC 1.15.1.1) was significantly reduced in the same tissues. 3. The results do not support the view that increased lysosomal fragility represents a major biochemical consequence of nutritional Zn deficiency in animals.