Figure 4.

Infiltration of lymphocytes into the brain after cardiac arrest and resuscitation. (A) Flow cytometry evaluation of regulatory (CD4⁺) and cytotoxic (CD8⁺) T cell infiltration into the brain parenchyma 3 days after cardiac arrest and resuscitation, as compared to the naïve and time-matched sham controls. (B) Quantification shows nearly threefold increase in the CD8⁺T cell population in the brain tissue. Data are presented as mean ± SEM and analyzed using one-way ANOVA with least significant difference post hoc comparisons. *P < 0.05.