1. Purpose: To detect if insecticide fenvalerate has damage to DNA of lymphocyte of mouse Ŀ�ģ����ɱ�����ɱ��������ͣ��Ƿ��С������Ѫ�ܰ�ϸ��DNA�����ˡ�
2. However world health officials believe this version of the insecticide is not harmful to humans. Ȼ������������֯��Ա�����°汾��ɱ���������û��Σ����
3. Pyrethroids was a kind of most widely used, high performance, low residues and middle toxicity pesticides insecticide. ������������һ��Ӧ�ù㷺����Ч���Ͳ������еȶ��Ե�ũҩɱ�����