填写DNA粗提取与鉴定实验操作时所用试剂。
⑴ 提取鸡血细胞中核物质                                         
⑵ 溶解核内DNA：                                               
⑶ 析出2mol/LNaCl溶液中的DNA                                  
⑷ DNA粘稠物的再溶解                                           
⑸ 提取杂质较少的DNA白色乳状丝状物                             
⑹ DNA的鉴定