The Virus of Infectious Feline Agranulocytosis* Ii. Im~unolooica~ Relation to Other Viruses

I t was necessary to learn first whether cats that recover from either the spontaneous or experimental infection (irrespective of the route of inoculation) are solidly resistant to reinfection by massive doses of virus, as measured by the absence of the accepted clinical, hematological, or pathological evidence of disease. In an experiment to decide the point, cats known to have had the typical disease in from a few days to many months previously were tested by the parenteral injection of virus for their capacity to resist reinfection.