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How to tell if peptides have degraded Visual inspection (reconstituted) Fresh peptide solution should be : Clear (transparent) Colorless (or very slight tint) No particles or cloudiness No discoloration Signs of degradation : Cloudiness or haziness Yellow or brown tint Visible particles floating Crystallization Oily film on surface If any of these present : Don't use, peptide has degraded
Figure 3 and 4 present the results for IgE and HLA-DR, respectively
Also, protect the vial from direct light
Ocular drug delivery through pHEMA-hydrogel contact lenses co-loaded with lipophilic vitamins
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