I have reviewed the product instructions for the Siglec-15 recombinant protein, which indicate that for short-term experiments (up to 7 days), the reconstituted protein solution can be stored at 2-8°C. I would like clarification on whether the protein solution, reconstituted with ddH2O, needs to be maintained at a concentration of at least 100 μg/mL while stored in the refrigerator, similar to protocols for frozen storage. Alternatively, can I simply reconstitute the protein with the provided ddH2O, store it in the refrigerator, and then dilute it with saline as needed, ensuring it is used within 7 days? Any insights or recommendations based on your experience would be greatly appreciated!