NATtrol Parainfluenza Type 4
![NATtrol Parainfluenza Type 4](https://www.h-h-c.com/wp-content/uploads/2020/03/01aaa_7839-20-1-1500x830.jpg)
NATtrol Parainfluenza Virus Type 4 Stock (NATPARA4-ST) is formulated with purified, intact virus particles that have been chemically modified to render them non-infectious and refrigerator stable. Each vial contains 1.0 mL of Parainfluenza Virus Type 4 NATtrol. NATPARA4-ST stock is supplied in a purified protein matrix that mimics the composition of a true clinical specimen.…