Mechanisms of Ageing and Development 106 (1999) 327-329 Contents of volume 106 Volume 106, Nos. 1,2 Review Mechanisms of maturation and ageing of collagen A.J. Bailey, R.G. Paul, L. Knott (Bristol, UK) Sensitivity to ageing of the limbic dopaminergic system: a review P. Barili, G. De Carolis, D. Zaccheo, F. Amenta (Camerino, Roma, Genoa, Italy) Hypomethylation of an exon I estrogen receptor CpG island in sponta- neous and carcinogen-induced mammary tumorigenesis in the rat P. Yenbutr, L. Hilakivi-Clarke, A. Passaniti (Baltimore, MD; Washing- ton, DC) Fidelity levels of DNA polymerases in tumorigenic state cells and serially transplantable tumor cells T. Taguchi, M. Fukuda, M. Ohashi (Tokyo, Japan) Lack of correlation between apoptosis and DNA single-strand breaks in X-irradiated human peripheral blood mononuclear cells in the course of ageing C. Chauvin, E. Heidenreich, K. Elmendorff-Dreikorn, H. Slor, J. Kutzner, R. Batel, H.C. Schréder (Mainz, Germany; Tel-Aviv, Israel; Rovinj, Croatia) T-Kininogen is a biomarker of senescence in rats R. Walter, D.M. Murasko, F. Sierra (Philadelphia, PA) Similar responses by macrophages from young and old mice infected with Mycobacterium tuberculosis E.R. Rhoades, I.M. Orme (Denver, CO) Serum hyaluronic acid in Down’s syndrome T. Hutchin, L. Martin, V. Prasher, A.J. Sinclair (Birmingham, UK) . Changes in the regulation by endothelium of norepinephrine response in isolated, perfused mesenteric vascular bed of rats at different ages C. Konishi, Y. Naito, N. Ohara (Kanagawa, Japan) 328 Contents of volume 106 Age peculiarities of changes in the contractile function of isolated rat hearts during prolonged perfusion V.V. Frolkis, O.V. Beruk (Kiev, Ukraine) Zinc, T-cell pathways, aging: role of metallothioneins E. Mocchegiani, M. Muzzioli, C. Cipriano, R. Giacconi (Ancona, Italy) Lumbar motor neuron size and number is affected by age in male F344 rats J.M. Jacob (Oklahoma City, OK) Volume 106, No. 3 Age-associated alterations in cardiac and skeletal muscle glucose trans- porters, insulin and IGF-1 receptors, and PI3-kinase protein contents in the C57BL/6 mouse L.C. Martineau, S.G. Chadan, W.S. Parkhouse (Burnaby, Canada) . Geroprotector effectiveness of melatonin: investigation of lifespan of Drosophila melanogaster D.M. Izmaylov, L.K. Obukhova (Moscow, Russia) Effect of in vitro aging on the biosynthesis of glycosaminoglycans by human skin fibroblasts. Modulation by the elastin-laminin receptor I. Fodil-Bourahla, I. Drubaix, L. Robert (Paris, Ivry sur Seine, France) Telomere shortening during aging of human osteoblasts in vitro and leukocytes in vivo: lack of excessive telomere loss in osteoporotic patients M. Kveiborg, M. Kassem, B. Langdahl, E.F. Eriksen, B.F.C. Clark, S.1.S. Rattan (Aarhus, Denmark) Age-dependent changes in rat liver microsomal membrane structure and functions under benzene treatment A.L. Sukhodub, V.I. Padalko (Kharkiv, Ukraine) A low degree of fatty acid unsaturation leads to lower lipid peroxidation and lipoxidation-derived protein modification in heart mitochondria of the longevous pigeon than in the short-lived rat R. Pamplona, M. Portero-Otin, J.R. Requena, S.R. Thorpe, A. Herrero, G. Barja (Lleida, Madrid, Spain; Columbia, SC) Interleukin-5 production by mononuclear cells from aged individuals: implication for autoimmunity D. Lio, C. D’Anna, L. Scola, G. Di Lorenzo, A. Colombo, F. Listi, C.R. Balistreri, G. Candore, C. Caruso (Palermo, Italy) Effects of hindlimb suspension on contractile properties of young and old rat muscles and the impact of electrical stimulation on the recovery process C. Mercier, J. Jobin, C. Lépine, C. Simard (Sainte-Foy, Québec, Canada) Contents of volume 106 Author index of volume 106 Subject index of volume 106 Contents of volume 106