Intravital 2-photon Movies Three-dimensional reconstruction of the inguinal lymph node, showing YFP-CD11c DCs (green) and the collagen in the capsule (blue) OVA-specific (cyan) and control (blue) T cells move among DCs (Green) around the high endothelial venules in a live lymph node T cells specific for OVA (yellow) cluster within a DC network (green) after antigen challenge DCs (green) traversing a B cell follicle (blue cells) and "probing" the perifollicular region T cells (blue) and DCs (green) moving among blood vessels in the lymph node Three-dimensional reconstruction based on the data from the previous movie GFP+ T cells, flow among endogenous lymphocytes in an efferent lymphatic, note lymphatic valve at lower right Tracking the patrolling movement of dermal DCs A single dermal DC crawling in the dermis Tracking a single T cell in the lymph node Tracking multiple T cells