Abstract
Histones, as they occur in the native nucleohistone of pea bud chromatin, are bound to RNA. This RNA, of molecules approximately 40 nucleotides in length, constitutes a distinct class of RNA distinguished by its high content of dihydrouridylic acid. The histone molecules of classical histone chemistry appear to be subunits of much larger structures present in native nucleohistone. Each such large structure, made of several subunits, bears as RNA molecule of the class which we have here described.

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