Excess of mental retardation and/or congenital malformation in reciprocal translocations in man J. P. FrynsA. KleczkowskaH. Van den Berghe Original Investigations Pages: 1 - 8
Mothers of children with Down syndrome have higher herpes simplex virus type 2 (HSV-2) antibody levels Göran AnnerénJ. S. GronowitzVivi-Anne Sundqvist Original Investigations Pages: 9 - 14
Tetraploid partial hydatidiform moles: two cases with a triple paternal contribution and a 92,XXXY karyotype U. SurtiA. E. SzulmanS. J. O'Brien Original Investigations Pages: 15 - 21
New data on clonal anomalies of chromosome 14 in ataxia telangiectasia: tct (14;14) and inv(14) A. AuriasM. F. CroquetteB. Dutrillaux Original Investigations Pages: 22 - 24
A possible new type of chromosome rearrangement: telomere-centromere translocation (tct) followed by double duplication A. AuriasB. Dutrillaux Original Investigations Pages: 25 - 26
Assignment of the gene for carboxypeptidase A to human chromosome 7q22→qter and to mouse chromosome 6 N. K. HoneyA. Y. SakaguchiS. L. Naylor Original Investigations Pages: 27 - 31
The significance of pericentric inversions of chromosome 2 M. DjalaliP. SteinbachA. Smith Original Investigations Pages: 32 - 36
Sister chromatid exchanges in patients with precancerous and cancerous lesions of cervix uteri V. V. V. S. MurtyA. B. MitraI. P. Singh Original Investigations Pages: 37 - 42
Characterization of a set of X-linked sequences and of a panel of somatic cell hybrids useful for the regional mapping of the human X chromosome I. OberléG. CamerinoJ. L. Mandel Original Investigations Pages: 43 - 49
A model for effective pairing and recombination at meiosis based on early replicating sites (R-bands) along chromosomes Ann C. Chandley Original Investigations Pages: 50 - 57
Evidence for the repeated primary non-disjunction of chromosome 21 as a result of premature centromere division (PCD) P. H. FitzgeraldSusan A. ArcherChristine M. Morris Original Investigations Pages: 58 - 62
Cytogenetic replication studies with short thymidine pulses in bromodeoxyuridine-substituted chromosomes of different mouse cell lines Walther VogelGünter Speit Original Investigations Pages: 63 - 67
Confirmation of the close linkage between the loci for human apolipoproteins AI and AIV by the use of a cloned cDNA probe and two restriction site polymorphisms S. RogneO. MyklebostH. Prydz Original Investigations Pages: 68 - 71
Lysosomal α-galactosidase in endothelial cell cultures established from a fabry hemizygous and normal umbilical veins Lis HasholtS. A. Sørensen Original Investigations Pages: 72 - 76
Retro-and prospective evaluation of dynamics of some mutational events N. P. BochkovS. D. GrigorianM. V. Tikhopoy Original Investigations Pages: 77 - 79
New insights into the effects of extra nucleolus organizer regions A. Pérez-CastilloM. A. Martín-LucasJ. A. Abrisqueta Original Investigations Pages: 80 - 82
Restriction fragment length polymorphisms in the D7S1 region of human chromosome 7 B. Carritt Original Investigations Pages: 83 - 85
Four restriction fragment length polymorphisms revealed by probes from a single cosmid map to human chromosome 12q N. E. BurokerR. E. MagenisM. Litt Original Investigations Pages: 86 - 94
Detection and partial characterization of a variant form of cytosolic aldehyde dehydrogenase isozyme R. EckeyD. P. AgarwalH. W. Goedde Short Communications Pages: 95 - 97
New cytogenetic techniques in the study of primate genome evolution G. F. De StefanoL. Ferrucci Short Communications Pages: 98 - 100
Sister chromatid exchange in immature haemopoietic cells, T-and B-lymphocytes P. E. CrossenJoan M. GodwinM. P. Bodger Short Communications Pages: 101 - 103
Maternal metaphases on direct preparation from chorionic villi and in cultures of villi cells G. SimoniF. RossellaM. Fraccaro Letters to the Editors Pages: 104 - 104