Additional control and high dose animals ( 2 / sex / group ) served as recovery animals for a 4 - week recovery period .
Additional control and high dose animals ( 2 / sex / group ) served as recovery animals for a 4 - week recovery period .
O O O B-DOSE_QUALIFICATION I-DOSE_QUALIFICATION O O B-GROUP I-GROUP I-GROUP I-GROUP I-GROUP O O O O O O O O O O O O O