human urinary erythropoietic-active crude protein was isotachophoretic fractionated in a lkb uniphor apparatus equipped with a plastic column using polyacrylamide as a stabilizing medium , phosphat ions as leading and glycinat ions as terminating electrolytes and ampholine carrier ampholytes ( ph : 5 -- 7 ) as spacers .
C0022023
ions
C0013832
electrolytes