[Fibroadenoma, mastopathy, intraductal papilloma: relationship to carcinoma--a case report of carcinoma of the breast arising in fibroadenoma].
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Biomedical subjects
Publications and source records attributed to N Nitta.
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N4-Aminocytidine was readily formed on treatment of cytidine with hydrazine-bisulfite under mild conditions. This reaction can be carried out for cytosines in polynucleotids as well. The nucleoside N4-aminocytidine was strongly mutagenic to bacteria and phage. The transformation of cytosines in polynucleotides into N4-aminocytosines is a convenient method for generating reactive groups in the polymer.
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N4-Aminocytosine reacted with acetone and acetaldehyde to form hydrazones that were readily revertible to the parent compound. With pyruvate, in contrast, it formed a stable hydrazone. By use of bromopyruvate, N4-aminocytosine was linked to glutathione.
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