CD8A and infection: To evaluate αPD1-Sin a clinically relevantcontext, we turnedto the well documented lymphocytic choriomeningitis virus (LCMV) infectionmodel of CD8 T cell exhaustion., Briefly, naïvemice were infected with LCMV Clone 13 (generously provided by thelaboratory of John Teijaro at Scripps Research), a strain that induceschronic infection,, for 15 days.