Abstract
Summary
The present report describes the purification of nuclei from rat pancreas and the use of isoelectric focusing for the segregation of histone fractions, a heterogeneous mixture with respect to charge. This procedure employs gels of 5% polyacrylamide as support matrices, in 6.25 M urea, and spans a pH range of 7.5-10.8. It was, therefore, found adequate for study of the microheterogeneity of histones. The banding pattern of histone fractions in pancreas development using electrofocusing is presented.
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