Virulence and Immunogenicity in Mice of Airborne Encephalomyocarditis Viruses and Their Infectious Nucleic Acids

Autor: T. G. Akers, S. B. Bond, C. Papke, W. R. Leif
Rok vydání: 1966
Předmět:
Zdroj: The Journal of Immunology. 97:379-385
ISSN: 1550-6606
0022-1767
DOI: 10.4049/jimmunol.97.3.379
Popis: Summary Mice were exposed to aerosols of different strains of the encephalomyocarditis virus group. Responses in mice were different according to strains, virulence being correlated with plaque size. Small plaque-forming strains, ME and Mengo-37A (a heat-resistant mutant of Mengo), were essentially avirulent. The avirulent strains were immunogenic when in sufficient concentration. Aerosol studies with infectious RNA extracted from Mengovirus, ME, and Mengo-37A indicated that the responses in mice were similar to those observed with intact virus. Mengovirus RNA aerosols were lethal for mice, whereas Mengo-37A and ME RNA were avirulent and were not immunogenic in the limited aerosol concentration tested. Mice immunized with intact Mengo-37A virus were refractory to Mengo RNA aerosol challenge.
Databáze: OpenAIRE