1. Altered cellular response to UV irradiation in a patient affected by premature ageing

   • Miria Stefanini
   • G. Orecchia
   • Fiorella Nuzzo

   Original Investigations Pages: 189 - 192

2. The human ribosomal RNA genes: structure and organization of the complete repeating unit

   • J. E. Sylvester
   • D. A. Whiteman
   • R. D. Schmickel

   Original Investigations Pages: 193 - 198

3. Increased spindle resistance to antimicrotubule agents in women of high risk for meiotic nondisjunction

   • Aviva Dotan
   • Lydia Avivi

   Original Investigations Pages: 199 - 204

4. Paracentric inversions in man

   • J. P. Fryns
   • A. Kleczkowska
   • H. Van den Berghe

   Original Investigations Pages: 205 - 213

5. Free N-acetylneuraminic acid (NANA) storage disorders: evidence for defective NANA transport across the lysosomal membrane

   • G. M. S. Mancini
   • F. W. Verheijen
   • H. Galjaard

   Original Investigations Pages: 214 - 217

6. Ring chromosome 21 in healthy persons: different consequencies in females and in males

   • B. Dallapiccola
   • V. De Filippis
   • L. Zelante

   Original Investigations Pages: 218 - 220

7. Different ζ globin gene deletions among Black Americans

   • A. E. Felice
   • M. P. Cleek
   • T. H. J. Huisman

   Original Investigations Pages: 221 - 224

8. Direct regional assignment of the gene for vitamin D binding protein (Gc-globulin) to human chromosome 4q11-q13 and identification of an associated DNA polymorphism

   • Nancy E. Cooke
   • H. F. Willard
   • Donna L. George

   Original Investigations Pages: 225 - 229

9. Tentative assignment of piebald trait gene to chromosome band 4q12

   • J. J. Hoo
   • R. H. A. Haslam
   • C. van Orman

   Original Investigations Pages: 230 - 231

10. Familial fragile site found at the cancer breakpoint (1)(q32)

    • Fiorella Shabtai
    • J. Hart
    • I. Halbrecht

    Original Investigations Pages: 232 - 234

11. Juvenile Huntington disease

    • J. G. van Dijk
    • E. A. van der Velde
    • G. W. Bruyn

    Original Investigations Pages: 235 - 239

12. Serum haptoglobin types and leukemia

    • S. Nevo
    • I. Tatarsky

    Original Investigations Pages: 240 - 244

13. Haplotypes of the human apoprotein AI-CIII-AIV gene cluster in coronary atherosclerosis

    • G. A. A. Ferns
    • D. J. Galton

    Original Investigations Pages: 245 - 249

14. Two-dimensional gel analysis of proteins from human trisomy 21 fetal liver tissue after DEAE-Sepharose chromatography

    • G. H. Reichert

    Original Investigations Pages: 250 - 253

15. The chromosome breakpoint at 14q32 in an ataxia telangiectasia t(14;14) T cell clone is different from the 14q32 breakpoint in Burkitts and an inv(14) T cell lymphoma

    • A. A. Kennaugh
    • S. V. Butterworth
    • A. M. R. Taylor

    Original Investigations Pages: 254 - 259

16. Telomeric fusion in pre-T-cell acute lymphoblastic leukemia

    • R. Morgan
    • V. Jarzabek
    • A. A. Sandberg

    Original Investigations Pages: 260 - 263

17. Linkage studies of X-linked recessive spastic paraplegia using DNA probes

    • S. Kenwrick
    • V. Ionasescu
    • K. E. Davies

    Original Investigations Pages: 264 - 266

18. Mapping of human X-linked hypophosphataemic rickets by multilocus linkage analysis

    • A. P. Read
    • R. V. Thakker
    • J. L. H. O'Riordan

    Original Investigations Pages: 267 - 270

19. X-linked dominant hypophosphatemia is closely linked to DNA markers DXS41 and DXS43 at Xp22

    • M. Mächler
    • D. Frey
    • W. Schmid

    Original Investigations Pages: 271 - 275

20. Esterase D polymorphism in a French-Canadian population

    • L. Couture
    • Monique Chagnon
    • C. Bouchard

    Short Communications Pages: 276 - 276

21. Assignment of human uroporphyrinogen decarboxylase (URO-D) to the p34 band of chromosome 1

    • A. Dubart
    • M. G. Mattei
    • M. Goossens

    Short Communications Pages: 277 - 279

22. Announcements

    Announcement Pages: 280 - 280