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Publikováno v:
Bioorganicheskaia khimiia. 17(6)
A new reagent, polyphotobiotin (PPhB), for labelling DNA probes has been obtained using low molecule oligoethylenimine (M 600 Da). Photoreactive group of PPhB is 4-azido-salicylic acid. The procedure is simple and quick, the reaction time being about