With photosensitivebiotin lablled probes,HEV derived from clone ET1.1(418 bp)and ETV derived from Echo-13(500bp),Dot and Southern blotting were carried out on the NC membranes.

• 以光敏生物素标记HEVET1.；14186p探针，对硝酸纤维素膜进行点杂交和Southern印迹杂交。