The results shown in Figure 4 indicate that a similar level of the cleaved caspase-8 (33 and 10 kDa) was observed upon VRSA/vancomycin-treated VRSA infection in both A549-5S-5 and A549-5.20 cells, suggesting a similar signal strength to trigger the extrinsic apoptotic pathway. The gene discussed is CASP8; the disease is Vancomycin-Resistant Staphylococcus Aureus Infection.