title: One flew over the progenitor's nest: migratory cells find a home in osteoarthritic cartilage.
abstract: Articular cartilage is the target tissue of osteoarthritis (OA), a degenerative disease with no cure. In this issue of Cell Stem Cell, Miosge and colleagues (Koelling et al., 2009) report that migratory progenitor cells occupy degenerating OA tissue but that this population is not present in healthy cartilage.
authors.affiliation: Connective Tissue Biology Laboratories, Cardiff School of Biosciences, Cardiff University, Museum Avenue, CF10 3AX Cardiff, Wales, UK.
authors.forename: Ilyas M
authors.initials: IM
authors.lastname: Khan
authors.forename: Rebecca
authors.initials: R
authors.lastname: Williams
authors.forename: Charles W
authors.initials: CW
authors.lastname: Archer