1. Evolution of the Simiiformes and the phylogeny of human chromosomes

   • I. C. Clemente
   • M. Ponsà
   • J. Egozcue

   Review Article Pages: 493 - 506

2. Microdissection of banded human chromosomes

   • Gabriele Senger
   • Hermann-Josef Lüdecke
   • Uwe Claussen

   Original Investigations Pages: 507 - 511

3. Construction and characterization of band-specific DNA libraries

   • Hermann-Josef Lüdecke
   • Gabriele Senger
   • Bernhard Horsthemke

   Original Investigations Pages: 512 - 516

4. Cocultivation of Fanconi anemia cells and of mouse lymphoma mutants leads to interspecies complementation of chromosomal hypersensitivity to DNA cross-linking agents

   • Filippo Rosselli
   • Ethel Moustacchi

   Original Investigations Pages: 517 - 521

5. Segregation analysis of 1885 DMD families: significant departure from the expected proportion of sporadic cases

   • G. Barbujani
   • A. Russo
   • I. Hausmanova Petrusewicz

   Original Investigations Pages: 522 - 526

6. Cell type-dependent difference in the distribution and frequency of excess thymidine-induced common fragile sites: T lymphocytes and skin fibroblasts

   • Akira Kuwano
   • Ichiro Murano
   • Tadashi Kajii

   Original Investigations Pages: 527 - 531

7. Cytogenetic characterization of ataxia telangiectasia (AT) heterozygotes using lymphoblastoid cell lines and chronic γ-irradiation

   • Manjula Waghray
   • Sultan Al-Sedairy
   • Mohammed A. Hannan

   Original Investigations Pages: 532 - 534

8. Kinetochore formation in experimentally undercondensed chromosomes

   • Thomas Haaf
   • Michael Schmid

   Original Investigations Pages: 535 - 538

9. Phocomelia and additional anomalies in two sisters

   • A. Schinzel

   Original Investigations Pages: 539 - 541

10. Localization of the human oncogene SPI1 on chromosome 11, region p11.22

    • Nguyen Van Cong
    • D. Ray
    • F. Moreau-Gachelin

    Original Investigations Pages: 542 - 546

11. Prophase of meiosis in human spermatocytes analysed by EM microspreading in infertile men and their controls and comparisons with human oocytes

    • R. M. Speed
    • A. C. Chandley

    Original Investigations Pages: 547 - 554

12. Unusual features in the inheritance of ataxia telangiectasia

    • C. G. Woods
    • S. E. Bundey
    • A. M. R. Taylor

    Original Investigations Pages: 555 - 562

13. Variation in the size of human apolipoprotein(a) is due to a hypervariable region in the gene

    • Gisela Lindahl
    • Elisabeth Gersdorf
    • Gerd Utermann

    Original Investigations Pages: 563 - 567

14. Genetic polymorphisms of gene conversion within the duplicated human α-globin loci

    • Hitoshi Nakashima
    • Asao Fujiyama
    • Takashi Imamura

    Short Communications Pages: 568 - 570

15. Screening for steroid sulfatase (STS) gene deletions by multiplex DNA amplification

    • Andrea Ballabio
    • Joel E. Ranier
    • C. Thomas Caskey

    Short Communications Pages: 571 - 573

16. Partial trisomy of the distal segment of 14q

    • Yasuhiro Nakamura
    • Kyoko Sakai
    • Masao Yamada

    Clinical Case Reports Pages: 574 - 576

17. Female with hypohidrotic ectodermal dysplasia and de novo (X;9) translocation

    • Kay D. MacDermot
    • Maj Hultén

    Clinical Case Reports Pages: 577 - 579

18. A new EcoRI polymorphism at the D21S13 locus

    • S. -M. Pulst
    • J. R. Korenberg
    • M. Carbone

    OriginalPaper Pages: 580 - 580

19. Partial correction of chromosome instability in Fanconi anemia by desferrioxamine

    • Martin Foot
    • Holger Hoehn

    Letter to the Editors Pages: 581 - 581

20. Reply to letter by M. Poot and H. Hoehn

    • Berardino Porfirio
    • Bruno Dallapiccola

    Letter to the Editors Pages: 582 - 583

21. Announcements

    Announcement Pages: 584 - 584