The future of immunoimaging - Deeper, bigger, more precise, and definitively more colorful

Immune cells are thoroughbreds, moving farther and faster and surveying more diverse tissue space than their nonhematopoietic brethren. Intravital 2-photon microscopy has provided insights into the movements and interactions of many immune cell types in diverse tissues, but more information is needed to link such analyses of dynamic cell behavior to function. Here, we describe additional methods whose application promises to extend our vision, allowing more complete, multi-scale dissection of how immune cell positioning and movement are linked to system state, host defense, and disease.