| Recombinant Activin A (ActA; R&D Systems 338-AC-005) |
5 µg |
| BSA fraction V solution in PBS (0.1%, w/v)
|
0.5 mL |
| Resuspend lyophilized Activin A in its vial, mix well, aliquot 50 µL, and freeze at −80°C. |
| Thaw each aliquot as needed and store it at 4°C. Do not refreeze. |