Technical Improvement of the END Method

The END method is a new in vitro method for detecting and measuring hog cholera (HC) virus and its neutralizing antibody by means of an enhancing effect of HC virus on Newcastle disease (ND) virus in swine testicular (ST) cell cultures (4--6, 8). ST cell monolayers infected with HC virus, which exerts no cytopathic effect (CPE), develop CPE when challenged… CONTINUE READING