Prior to infection of P388D1 cells, immature DENV was pre-incubated for 1 hr at 37°C in the presence or absence of increasing concentrations of anti-prM or anti-E antibodies and added to P388D1 at a multiplicity of 1000 genome-containing particles (GCP) per cell (MOG 1000) as determined by quantitative PCR (qPCR) analysis. This evidence concerns the gene MOG and infection.