For long-term storage of DNA, eluting in Buffer AE and placing at –20°C is
recommended, since DNA stored in water is subject to acid hydrolysis.
Yields of DNA will depend both on the amount and the type of tissue processed.
25 mg of tissue will yield approximately 10–30 μg of DNA in 400 μl of water
(25–75 ng/μl), with an A260/A280 ratio of 1.7–1.9.
For more information about elution and how to determine DNA yield, length, and
purity, refer to pages 25–26 and Appendix A, page 51.