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Total RNA Isolation: 100 l Viral Sample From Cultured-Cell Supernatant Containing Virus

n tube on clean absorbent paper. Add 600 l 70% ethanol and invert the capped tube several times to wash the RNA pellet.

5. Centrifuge at 13,00016,000 x g for 1 min. Carefully pour off the ethanol.

6. Invert and drain the tube on clean absorbent paper and allow to air-dry 1015 min.

RNA Hydration
1. Add 20 l RNA hydration solution (20 l will give a concentration of 50 g/ml if the total yield is 1 g RNA).

2. Allow RNA to rehydrate on ice for at least 30 min. Store purified RNA sample at 70 to 80C until use.

3. Before use, vortex sample vigorously for 5 sec and pulsespin. Pipet sample up and down several times to ensure adequate mixing.



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