2. Surgery, performed on a man's vas deferens inside the scrotum, which renders him infertile. һ����������������������ڵ��侫���жϣ�ʹ����ʧȥ����������
3. It vas applied to studying on the electrophysiological character of ion channels in atherosclerotic vascular smooth muscle cells. ��������Ѱ����������о���������Ӳ��Ѫ��ƽ����ϸ������ͨ�����������Եĸı䡣