Rico- Lombana, A. R.-. L., Mateus, J., Lasso, P., González, J. M., Puerta, C. J., & Cuéllar, A. (2012). Expression of inhibitory receptors on CD4+ and CD8+ T cells from healthy Colombian donors. Universitas Scientiarum, 17(1), 35–42. https://doi.org/10.11144/javeriana.SC17-1.eoir