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Matchett, K

Dec 29, 2025 Peptides absolutely expire, but shelf life varies dramatically based on form (lyophilized powder vs reconstituted liquid), storage conditions (freezer vs refrigerator vs room temperature), peptide type (some are more stable than others), and handling (contamination, light exposure, temperature fluctuations)

10.1046/j.1432-1327.2000.00949.x 84 MatsuzakiM.Ellis-DaviesG

In other cell types such as spermatogonial cells, GSH depletion may induce autophagy 22

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For those, mL only means something after a specific prep volume is chosen