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Figure 7: Trace levels of polysorbates stabilize peptide against agitation induced instability. 7a: Turbidity (OD350) before and after agitation for peptide formulations with different levels of PS20 and PS80. 7b: Sub-visible particle counts after agitation for peptide formulations with different levels of PS20 and PS80. 7c: High Molecular weight species (HMWS) before and after agitation for peptide formulations with different levels of PS20 and PS80. Error bars are the standard deviations of the measurement. |