[Antiviral factor isolated from infected cell cultures]. / Antivirusnyi faktor, vydeliaemyi iz infitsirovannykh kul'tur kletok.

An antiviral factor of protein nature inhibiting reproduction of VEE, herpes, vaccinia VSV, fowl plague viruses was isolated from infected cell cultures. The factor has no virucidal or prophylactic effect, stable to low pH values and heating at 100 degrees C for 30 min.