Methods: Cell culture in serum - free medium , indirect immunofluorescence cytochemistry were used.方法: 采用无血清细胞培养技术, 间接免疫细胞化学染色法.Methods: The technique of serum free cultivation and the methods of immunofluorescence cytoc...
她小心翼翼地跨着石头走。She picked her way delicately over the rocks.他们跨着迅速的步伐,穿越过错综的小路,渐渐地逼近海岸.They moved at a brisk walk , threading the intricate lanes and drawing nearer to the shore....