in light -- dark-synchronized male rats , the kinetic behavior of d , l- , l- , and d-propranolol after single ( 1.78 and 8.89 mg/kg ) or multiple drug administration ( 6 x 8.89 mg/kg ) was studied in plasma , heart , and brain both in the light period ( l ) and in the dark period ( d ) .
C0004927
behavior
C0006104
brain