Shanghai Songjiang District Central Hospital was established in June 1949. It is a Class II and A general hospital integrating medical treatment, teaching, scientific research, prevention and emergency care, and became the Shanghai Songjiang Center affiliated to Nanjing Medical University in December 2008. Hospital.

The central laboratory of the hospital purchased a tissue grinder Tissuelyser-24 from Shanghai Jingxin Technology. Grind animal tissue samples and pathological tissue samples

There is no significant difference in the concentration and purity of the DNA and RNA extracted from FT after the automatic sample rapid grinder treatment and manual liquid nitrogen grinding treatment of Shanghai Jingxin (pairwise test P>0.05). However, manual grinding has a larger sample loss rate. For samples with low DNA extraction concentration, the automatic grinder can achieve zero sample loss. It has obvious advantages in DNA extraction, and the manual processing process is complicated and easy to cross. Contamination, operation time and other aspects are not as good as Shanghai Jingxin's automatic sample rapid grinder, so the automatic grinder has great advantages for DNA extraction compared to manual grinding.