Campbell, J. P., Guy, K., Cosgrove, C., Florida-James, G., & Simpson, R. J. (2008). Total lymphocyte CD8 expression is not a reliable marker of cytotoxic T-cell populations in human peripheral blood following an acute bout of high-intensity exercise. Brain, Behavior, and Immunity, 22(3), 375-380. https://doi.org/10.1016/j.bbi.2007.09.001