Serological relationships among five strains of infectious pancreatic necrosis virus |
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| Authors: | S ISHIGURO H IZAWA H KODAMA M ONUMA T MIKAMI |
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| Institution: | Central Laboratories, Kyoritsu Shoji Co. Ltd, Takamihara, Kukizaki-Mura, Inashiki-Gun, Ibaraki-Ken, Japan;Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan |
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| Abstract: | Abstract. The serological relationships of five strains of infectious pancreatic necrosis virus (IPNV) were examined by cross-neutralization, cross-fluorescent antibody (FA) and cross-immunodiffusion (ID) tests. Few serological relationships among these strains were observed by the cross-neutralization test, which is consistent with previous studies. Some cross reactions were observed by the FA test when antisera were reacted with cells infected with heterologous strains of IPNV. However, close antigenic relationships were demonstrated among these strains of IPNV by using the ID test when antisera to each strain of IPNV were titrated with their respective or heterologous antigens. The results of the present study showed that substantial antigenic relationships exist among the strains of IPNV examined. It is suggested that strain specific antigens which can be detected by virus neutralization and FA tests might exist on the surface of the virion. The FA test proved to be a useful method for detecting viral antigens of several strains of IPNV in tissue culture cells since monovalent antiserum reacted with homologous and heterologous IPNV antigens. |
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