Abstract
SUMMARY The enzyme linked immunosorbent assay (ELISA) has been shown to be a specific and sensitive method to detect a nuclear polyhedrosis virus in Heliothis armigera larvae. 1 ng/ml of purified virus particle antigen could be detected. The presence of larval extracts did not interfere in the assay. The growth of the virus in Heliothis armigera larvae was analysed by ELISA and the conventional counting of virus polyhedra and this showed that ELISA was a superior detection method.
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