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  • Title: Examination of the immunological relationship between measles virus and canine distemper virus using monospecific measles antisera.
    Author: Gould EA, Armstrong M, Shirodaria PV, De'Ornellas D.
    Journal: J Med Virol; 1981; 7(1):51-60. PubMed ID: 6165804.
    Abstract:
    Indirect immunofluorescence titrations were performed with measles virus, the Rockborn strain of canine distemper virus (CDV), and a large plaque variant of the Onderstepoort strain of CDV (Ond-LP) using monospecific antisera prepared against either the haemagglutinin (anti-HA), the haemolysin (anti-HL), or the ribonucleoprotein (anti-RNP) of measles virus. Tests with anti-HA showed that the Rockborn strain of CDV was more closely related to measles virus than Ond-LP. The ribonucleoprotein antigens of the CDV strains were closely related to each other but were both related to and distinct from measles virus RNP. The use of measles anti-HL serum demonstrated that CDV possesses an antigenically related acetone-sensitive component equivalent to the haemolysin of measles virus. Absorption of human convalescent serum with excess quantities of acetone-fixed CDV antigens had no effect on measles-specific anti-HA, HL, or RNP activity in the serum. Absorption with measles antigens on the other hand, totally removed all measles and CDV-specific HA and RNP activity. CDV was not neutralised by any of the monospecific antisera when tested either as individual antisera or as mixtures. Our results demonstrate the occurrence of antigenic variation between different strains of CDV, they also reveal unique antigenic determinants in both measles virus and CDV.
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