title: Skin aging: observations at the cellular and molecular levels.
authors.affiliation: Department of Dermatology, Boston University School of Medicine, Massachusetts 02118-2394, USA.
authors.forename: M
authors.initials: M
authors.lastname: Yaar
mesh_terms: D017209:Apoptosis; D006801:Humans; D008967:Molecular Biology; D015398:Signal Transduction; D015595:Skin Aging