Clinical investigation of levels of lipopolysaccharides and lipoteichoic acid after antimicrobial photodynamic therapy in teeth with secondary endodontic infection: an observational study. - KC, Dhaniba; Bharti, Ramesh; Verma, Promila; Tikku, Aseem P; Pandey, Pragya; Gupta, Prashant; Singh, Nishi (Lasers in Medical Science, 2025)