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Stability at a glance: Lyophilized powder at minus 20C: stable for many months Bacteriostatic water solution at 2 to 8C: roughly 28 days Sterile water solution at 2 to 8C: a few days at most Single-use aliquots frozen at minus 20C: the longest option, but freeze only once Proper Documentation and Labeling Methods Good records turn a vial into reliable data

These studies often employ techniques like ELISA or Western blotting to measure protein expression and qPCR to analyze gene transcription levels