Byihuse usukure ADN nziza cyane ya plasmid ADN ya bagiteri yahinduwe kubushakashatsi bwibinyabuzima bisanzwe bya molekuline nko guhinduka no gusya kwa enzyme.
◮Kuraho RNA utongeyeho RNase
◮Byoroshye- centrifugation ikorwa mubushyuhe bwicyumba
◮Byihuse—Igikorwa gishobora kurangira mu minota 20
◮Umutekano—Nta reagent ikoreshwa
◮Isuku ryinshi—OD260 / 280≈1.7-1.9