Mitochondrial DNA polymorphism in Japanese Satoshi HoraiEi Matsunaga Original Investigations Pages: 105 - 117
Segregation analysis of rare autosomal fragile sites S. L. ShermanG. R. Sutherland Original Investigations Pages: 123 - 128
Detection of bromodeoxyuridine-incorporation in mammalian chromosomes by a bromodeoxyuridine-antibody W. VogelMargot AutenriethG. Speit Original Investigations Pages: 129 - 132
Changes in the incidence of Down syndrome in Sweden during 1968–1982 L. IseliusJ. Lindsten Original Investigations Pages: 133 - 139
Unusual supernumerary chromosomes: types encountered in a referred population, and high incidence of associated maternal chromosome abnormalities Judith StambergG. H. Thomas Original Investigations Pages: 140 - 144
Heterogeneity of haplotypes among patients with severe Cooley disease in Eastern Sicily M. LombardoAngela RagusaDominique Labie Original Investigations Pages: 145 - 147
Synapsis and synaptic adjustment in an infertile human male heterozygous for a pericentric inversion in chromosome 1 O. Gabriel-RobezC. RatomponirinaM. R. Guichaoua Original Investigations Pages: 148 - 152
Assignment of the human tissue-type plasminogen activator gene (PLAT) to chromosome 8 J. H. VerheijenR. VisseP. Meera Khan Original Investigations Pages: 153 - 156
A case of female hemophilia with a 46,XXr karyotype studied with X-chromosome DNA probes Simone GilgenkrantzMarie-Elisabeth BriquelIsabelle Oberle Original Investigations Pages: 157 - 159
Sister chromatid exchange in highly purified human B and T lymphocytes K. Miller Original Investigations Pages: 160 - 163
Deletions of the esterase D locus from a survey of 200 retinoblastoma patients J. K. CowellP. RutlandJ. Hungerford Original Investigations Pages: 164 - 167
haplotypes identified by DNA polymorphisms at the apolipoprotein A-1 and C-III loci and hypertriglyceridaemia A. ReesJ. StocksD. Galton Original Investigations Pages: 168 - 171
Identification of trophoblast in chorionic villi biopsy samples Angela E. CovoneP. M. Johnson Short Communications Pages: 172 - 173
Direct estimation of the non-disjunction rate at first meiotic division in the human male Marie GuichaouaSegolène AymeJ. -M. Luciani Short Communications Pages: 174 - 176
A new partially deficient variant in the phosphoglucomutase 1 system, PGM1*W31 J. BertramsUte HintzenFe Barberan Short Communications Pages: 177 - 178
Variation in the frequency of sister chromatid exchanges in repeated human lymphocyte cultures G. SpeitR. DüringK. Mehnert Short Communications Pages: 179 - 181
Familial sinus node disease and degenerative myopia—a new hereditary syndrome? Altan Onat Clinical Case Reports Pages: 182 - 184
18p− Syndrome: an unusual case and diagnosis by in situ hybridization with chromosome 18-specific alphoid DNA sequence Svetlana G. VorsanovaY. B. YurovA. F. Tirskaia Clinical Case Reports Pages: 185 - 187
Isochromosome 15 with behaviour disorder Arabella SmithS. Einfeld Clinical Case Reports Pages: 188 - 188
Cytogenetic analysis of early human abortuses after preparation of chromosomes directly from chorionic villi I. HansmannIris BartelsIngrid Schübbe Letters to the Editors Pages: 189 - 189
