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Protein (50 g) was separated using sodium dodecyl sulfate-polyacrylamide gel electrophoresis on a Precast PAGE Gel (412%, APPLYGEN, Beijing, China) and electroblotted onto nitrocellulose membranes
A slightly pricier vial that comes with a real, recent COA is usually the better buy than a cheaper one with no lab data at all
Pevec D, Novinscak T, Brcic L, Sipos K, Jukic I, Staresinic M, et al
Certificate of Analysis and COA Documentation Reliable suppliers commonly provide: Certificate of analysis (COA) HPLC purity reports Batch-specific analytical testing Assay documentation Research-grade verification A verified COA allows researchers to review analytical consistency and purity standards before laboratory research applications
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