title: In vivo imaging of leukocyte trafficking in blood vessels and tissues.
abstract: Selective recruitment of blood-borne leukocytes to tissues and their proper positioning within them is crucial for the many integrated functions of the immune system. Intravital microscopy (IVM) techniques have been employed for more than a century to study these events at the single-cell level in living animals. Conventional video-based IVM allows the visualization of extremely rapid adhesion events at the interface between blood and tissue. Multiphoton IVM is a relatively new tool for imaging the slower dynamics of cell migration and cell-cell interactions in the extravascular space in three dimensions. Fueled by the burgeoning development of sophisticated fluorescent markers and increasingly powerful imaging tools, we are currently witnessing the emergence of a new field in immuno-imaging, in which leukocyte function and cell-cell communication is explored in a truly physiological context.
authors.affiliation: The CBR Institute for Biomedical Research and the Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Thorsten R
authors.initials: TR
authors.lastname: Mempel
authors.forename: M Lucila
authors.initials: ML
authors.lastname: Scimone
authors.forename: J Rodrigo
authors.initials: JR
authors.lastname: Mora
authors.forename: Ulrich H
authors.initials: UH
authors.lastname: von Andrian
mesh_terms: D000818:Animals; D001808:Blood Vessels / Q000276:immunology*; D002448:Cell Adhesion / Q000276:immunology; D002450:Cell Communication / Q000276:immunology*; D002465:Cell Movement / Q000276:immunology*; D007962:Leukocytes / Q000276:immunology*; D051379:Mice; D008856:Microscopy, Fluorescence / Q000379:methods*; D018715:Microscopy, Video / Q000379:methods*