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Enzyme-linked immunosorbent assay (ELISA) for the detection of antibodies against porcine cytomegalovirus (PCMV) was developed using the OF-1 strain of PCMV as an antigen. Results of the ELISA were compared to those of indirect fluorescent antibody (IFA) and serum neutralization (SN) tests. ELISA and IFA test were found to be extremely sensitive more than SN test. All of 11 tested sera were highly reactive in both ELISA and IFA test, but 6 of them were antibody-negative in the SN test. The retrospective survey of 436 fattening pig sera collected in Japan in 1981 showed that 433 (99.4%) of them were highly antibody-positive in ELISA.
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Tajima et al. (1993) studied this question.
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