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[30,31,32]), and differences in proton activity coefficients can be a particular problem

Ann N Y Acad Sci 2007;1112:76-85

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Research peptides are synthesized versions of naturally occurring peptides, manufactured to precise specifications for use in scientific studies

One method for determining sufficient mucoadhesiveness includes monitoring changes in the interaction of the composition with a mucosal layer, including but not limited to measuring changes in residence or retention time of the composition in the absence and presence of the excipient