Objective To investigate rat unilateral testicular torsion resulting in ipsilateral and contralateral testicular germ cell apoptosis,and to discuss the protective mechanism of astragalus injection and decreased reproductive capacity after unilateral testicular torsion/detorsion. Methods 40 healthy adult Wistar rats were divided randomly into four groups,sham operation group (group A,n=10),torsion/detorsion group (group B,n=10),single astragalus plus detorsion group (group C,n=10),successive astragalus plus ...