Figure 1: The effect of sdrc knockout on the formation of MRSA biofilm. A: RT-PCR was used to detect the knockout efficiency of sdrc, with rpoA as the internal reference. B: CCK8 detection of the impact of sdrc knockout on the growth ability of MRSA. C: ELISA detection of MRSA virulence pathogenic factors α- Expression of HL and PSM. D: Crystal violet staining was used to observe the formation of MRSA biofilm. E: Scanning electron microscopy was used to observe the changes in surface morphology of MRSA.