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Figure 4: Electropherograms of HSA samples labeled with 1.00 x 10-5 M bis- SQHN-4d by pre-column (a,b) and on-column (c) methods. HSA concentration as follows: (a) 1.00 x 10-6 M; (b) 5.00 x 10-6 M; (c) 5.00 x 10-6 M.
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