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