Plasmid stabilities. (A) The plasmid stabilities of pSE-Lux1 and p3ZLux4 are compared within various bacteria for four days. The tested bacteria include S. Choleraesuis SC7085, S. Typhimurium OU5045 and OU5046, and E. coli TOP10. ***: significance with P value less than 0.001 (P < 0.001). (B) The plasmid stabilities of pSE-Lux1 within the encapsulated bacteria, including Acinetobacter baumannii (AB) AB08, K. pneumoniae (KP) CG354, and Serratia marcescens (SA) CB47, were tested. D0 represents the day zero when the stability test was initiated, and its value was calibrated as 100%, proportionally compared to those analyzed at the other time periods, including D1, D2, D3, and D4, which are denoted the day one, the day two, the day three, and the day four, respectively.