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Heat-killed and viable bacteria induce PD-L1 expression: (A) Exemplary Western blot of PD-L1 expression in DU-145 cells after 24h stimulation with viable or heat-killed P. gingivalis W83. (B): Western blot of PD-L1 mean expression in DU-145 cells after 24h stimulation with P. gingivalis W83; neg, non stimulated cells; v, viable bacterial infection; h, heat-killed bacterial infection; MOI, multiplicity of infection (n=3); * indicates corrected p < 0.05, ** indicates corrected p < 0.01.
