ACKNOWLEGDEMENTS
Craig McKelvey and Yang Wang are acknowledged for helpful discussions.
Ning Wang is a research biochemist, Binghua Hu is a research biochemist, Roxana Ionescu is a research fellow, Henryk Mach is a senior investigator, when this article was written, Joyce Sweeney was a senior investigator, Christopher Hamm is a research biochemist, Marc J. Kirchmeier is an associate director, and Brian K. Meyer is a research fellow, all in Bioprocess Analytical and Formulation Sciences, Bioprocess Research and Development, at Merck
Research Laboratories, Merck & Co., West Point, PA, 215.652.3992, brian_meyer@merck.com
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