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75 mM KCl
0.5 mM spermidine trihydrochloride
0.2 mM spermine tetrahydrochloride
250 mM sucrose
Add ~80 μL of 0.1 N NaOH per 20 mL of solution to titrate the pH to 7.3-7.5. Store 0.5-1 mL aliquots at -20°C.
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