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. 2012 May 4;7(5):e36423. doi: 10.1371/journal.pone.0036423

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Huang et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Panel A, MALDI-TOF mass spectrometry of PEGylated rhKGF-1 showing the molecular mass of PEGylated rhKGF-1 (36997 Da). Panel B, MALDI-TOF mass spectrometry of non-PEGylated rhKGF-1 showing the molecular mass of non-PEGylated rhKGF-1 (16297 Da). Panel C, D. N-terminal sequencing of non-PEGylated and PEGylated rhKGF-1 by Edman degradation method.