Reese, C. T., C. Ntam, T. Martin, S. Carrington, J. Leotaub, L. Cox, R. J. Williams, and D. A. Hill. “Internalization of Near-Infrared Fluorescent Dyes Within Isolated Macrophage Populations”. Cellular and Molecular Biology, vol. 53, no. 3, May 2007, pp. 27-33, https://mail.cellmolbiol.org/index.php/CMB/article/view/1123.