Cytotoxicity of Nef, dichlorvos (DDVP) and verapamil (Ver) were tested by MTT method in RBE4 cells.

• 采用MTT法了解Nef、敌敌畏（dichlorvos, DDVP）和维拉帕米（verapamil, Ver）对RBE4细胞的毒性作用。