Not so pure

The shipping is fast with appropriate packing. The protein is not so pure. Attached is a sds-page gel, the protein applied at a lower concentration but still can see some impurity. Thought that might be due to some latent MMP-9 with active MMP-9. Please note, the image uploaded is a combined picture by two cropped pictures, but they are from a same whole sds-page.

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Submitted Nov 18 2014

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