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Isoform distribution of Ovaleap® versus Gonal-f® by isoelectric focusing, as shown by a bar graph and b gel (Serva Violet 17 stain). In b, the decimal place is represented by a comma. Lane assignments are as follows: lanes 1 and 2 Gonal-f®; lane 3 pI marker; lane 4 empty; and lane 5 Ovaleap®. pI isoelectric points
