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The mutagenic activity of a series of longer chain O6-n-alkylguanine residues (O6-n-propyl, O6-n-butyl, O6-n-octyl) has been… Expand The tissue distribution of radioactivity 1 h after i.p. injection of [n-propyl-2,3-3H]1-n-propyl-1-nitrosourea (PNU) (100 mg/kg… Expand DNA substrates containing O6-n-butylguanine, O6-iso-butylguanine, O6-n-propylguanine and O6-iso-propylguanine were prepared by… Expand [n-propyl-2,3-3H]1-n-Propyl-1-nitrosourea (PNU) (sp. act.: 665 mCi/mmol) was synthesized and incubated with calf thymus DNA at pH… Expand