Abstract
The ability to generate an autoradiogram from deoxyribonucleic acid (DNA) immobilized on a positively charged nylon membrane could be compromised by the storage conditions of the membrane. HaeIII-digested human DNA was size fractionated and transferred to two types of positively charged nylon membranes. The membranes were stored at -20 degrees C, 4 degrees C, and ambient temperature and humidity for times ranging from 1 day to 13 weeks, then hybridized to variable number of tandem repeat (VNTR) probes to examine the effect of the storage conditions on the membrane-bound DNAs. It was shown that such membranes could be successfully hybridized and rehybridized if they were stored at -20 or 4 degrees C, but storage under ambient conditions reduced or eliminated the likelihood of successful hybridization.
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