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Systemic infection of H. armigera larvae with recombinant HearNPVs. Green fluorescent micrographs of infected larval tissues of 4th instar larvae at 96 h.p.i., were produced under ×200 magnification. The infected larval tissues were dissected out and EGFP from the pif-replaced recombinant HearNPV bacmids was observed by fluorescent microscopy.
