Gels were subsequently stained withsilver nitrate, in a sequence of steps as follows: (i) oxidation ina 0.8 mM solution of sodium thiosulfate for 10 min; (ii) washingwith Milli-Q water, for three times of 5 min each; (iii) stainingwith 12 mM silver nitrate and 0.02% formaldehyde, during 30 min;(iv) washing with Milli-Q water, for three times of 1 min each; (v)incubation in a developer solution, composed of 0.566 M sodiumcarbonate, 0.02 mM sodium thiosulfate and 0.02% formaldehyde,until the desired intensity is obtained; (vi) immersion in an aqueoussolution composed of 50% ethanol and 12% acetic acid, for 15 min.Gel images were acquired with a GS-800 calibrated densitometerfrom Bio-Rad.
Gels were subsequently stained withsilver nitrate, in a sequence of steps as follows: (i) oxidation ina 0.8 mM solution of sodium thiosulfate for 10 min; (ii) washingwith Milli-Q water, for three times of 5 min each; (iii) stainingwith 12 mM silver nitrate and 0.02% formaldehyde, during 30 min;(iv) washing with Milli-Q water, for three times of 1 min each; (v)incubation in a developer solution, composed of 0.566 M sodiumcarbonate, 0.02 mM sodium thiosulfate and 0.02% formaldehyde,until the desired intensity is obtained; (vi) immersion in an aqueoussolution composed of 50% ethanol and 12% acetic acid, for 15 min.Gel images were acquired with a GS-800 calibrated densitometerfrom Bio-Rad.
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