Fig. 4From: Detection, characterization and virulence analysis of nucleopolyhedrovirus isolated from the cotton leafworm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae)Partial amplification of polyhedrin gene (polh) by PCR using gene-specific primers. Polh: Represent PCR amplicon of polyhedrin gene (partial). C-: Negative control in which DNA was omitted. M represents 1 kb DNA ladderBack to article page