2.
Ronald N. Germain, Marc Bajénoff, Flora Castellino, Marcello Chieppa, Jackson G. Egen, Alex Y. C. Huang, Masaru Ishii, Lily Y. Koo, and Hai Qi. Making friends in out-of-the-way places: how cells of the immune system get together and how they conduct their business as revealed by intravital imaging. Immunological Reviews, 221:163-181, 2008.