CASP8 and viral infectious disease: We further examined some protein expressions that were involved in cellular apoptosis, and found the MV-Edm increased the expressions of cleaved caspase 9, caspase 3 and cleaved PARP but decreasing the protein expression of Bcl-2 in the cells of SiHawt and SiHash-cont groups, compared to those in SiHawt cells without virus infection, while caspase 8 was not activated.