Reproducible plaquing system for rabies, lymphocytic choriomeningitis,k and other ribonucleic acid viruses in BHK-21-13S agarose suspensions.

BHK21/13S-agarose suspension cultures provide an excellent plaquing system for rabies and lymphocytic choriomeningitis viruses. The system has facilitated accurate and reproducible assay of serum neutralization and cloning of these viruses. Rubella, reo, and Kern Canyon viruses may also be assayed by this technique.