Comparative study on DNA abstraction of human tissues preserved by two different methods

Comparative studies have been made on the effect of DNA abstraction of different human tissues preserved by different methods. The results showed that different human tissues preserved in 50% alcohol may have similar DNA abstraction effect for a relatively long time as frozen tissues. They have no significant difference (chi 2 < or = 0.21, P > or = 0.995). This preservation method has the advantage of simplicity, high DNA output and good effect, and is suitable for preserving tissues under special circumstances.