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John M. S. Bartlett.pdf - Bio-Nica.info

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34 Pearson and Stirling<br />

11. Microfuge at 12,000g for 5 min and discard supernatant.<br />

12. Spin tubes for 5 s to collect any remaining ethanol in bottom of tube. Remove last drops<br />

of ethanol with fine pastette.<br />

13. Air dry at room temperature for 10 to 15 min (any longer will render DNA difficult to<br />

redissolve).<br />

14. Resuspend in 100 µL of TE and incubate at 65°C for 15 min to dissolve DNA (see<br />

Note 3).<br />

4. Notes<br />

1. Some tissues contain large amounts of connective tissue and are difficult to digest. These<br />

can be ground frozen in liquid Nitrogen and ground in a mortar and pestle before being<br />

digested with proteinase K.<br />

2. Proteinase K solution can be kept for several days at 4°C.<br />

3. Repeat pipetting through a narrow gauge tip can help this process.

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