| Formulation | Supplied lyophilized |
| Molecular Weight | 19 kDa |
| Source | cDNA expressed in baculovirus |
| Purity |
Greater than 95% Endotoxin level < 1 EU/μg |
| Bioactivity | Determined in a cytopathic effect inhibition *****, specific activity ~ 1 x 108 Units/mg |
| Storage | At 4°C while lyophilized. For retention of full activity after reconstitution with sterile distilled water, the product should be stored at -70°C or below. |