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Abstract
The separation of model protein pairs (hemoglobin/ albumin, trypsin/chymotrypsin, hemoglobin A/hemoglobin F) was studied in an apparatus for preparative gel electrophoresis at loads up to 40 mg/cm 2of the cross-sectional area of the gel bed. Separation was favored by higher ionic strength and by longer migration path. Under the conditions used and within the load range studied, increasing total protein load had no adverse effect but increased voltage gradient, temperature, or gel strength were all unfavorable.