Rapid assay of murine leukemia virus helper activity for Friend spleen focus-forming virus

MeSH terms

• Animals
• Ethyl Ethers / pharmacology
• Formaldehyde / pharmacology
• Friend murine leukemia virus / analysis
• Friend murine leukemia virus / pathogenicity*
• Helper Viruses / analysis
• Immune Sera / pharmacology
• Leukemia Virus, Murine / drug effects
• Leukemia Virus, Murine / isolation & purification
• Leukemia Virus, Murine / pathogenicity*
• Leukemia Virus, Murine / radiation effects
• Leukemia, Experimental / microbiology
• Leukemia, Experimental / pathology
• Male
• Mathematics
• Methods
• Mice
• Radiation Effects
• Spleen / microbiology
• Spleen / pathology*
• Time Factors
• Ultraviolet Rays