1. Familial DiGeorge syndrome and associated partial monosomy of chromosome 22

   • F. Greenberg
   • W. E. Crowder
   • D. H. Ledbetter

   Original Investigations Pages: 317 - 319

2. Chromosome 13 restriction fragment length polymorphisms

   • T. P. Dryja
   • J. M. Rapaport
   • G. A. P. Bruns

   Original Investigations Pages: 320 - 324

3. Cytogenetic studies of familial Prader-Willi syndrome

   • T. Hasegawa
   • M. Hara
   • K. Yamada

   Original Investigations Pages: 325 - 330

4. Discrete subaortic stenosis as part of a short stature syndrome

   • A. Onat
   • N. Domaniç

   Original Investigations Pages: 331 - 335

5. Cytogenetic survey in couples with recurrent fetal wastage

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

   Original Investigations Pages: 336 - 354

6. Steroid sulphatase in man: A non inactivated X-locus with partial gene dosage compensation

   • G. Lykkesfeldt
   • Anne E. Lykkesfeldt
   • N. E. Skakkebæk

   Original Investigations Pages: 355 - 357

7. Study on established lymphoid cells in maple syrup urine disease. Correlation with clinical heterogeneity

   • Y. Jinno
   • I. Akaboshi
   • I. Matsuda

   Original Investigations Pages: 358 - 361

8. Human C4 polymorphism: Pedigree analysis of qualitative, quantiative, and functional parameters as a basis for phenotype interpretations

   • G. Mauff
   • K. Bender
   • Barbara Wachauf

   Original Investigations Pages: 362 - 372

9. First-trimester diagnosis on chorionic villi obtained by direct vision technique

   • Björn Gustavii
   • M. Alan Chester
   • Felix Mitelman

   Original Investigations Pages: 373 - 376

10. The use of distamycin A in human lymphocyte cultures

    • M. Schmid
    • D. A. Hungerford
    • W. Engel

    Original Investigations Pages: 377 - 384

11. Genetics of urinary pepsinogen: A new hypothesis

    • R. R. Frants
    • J. C. Pronk
    • A. W. Eriksson

    Original Investigations Pages: 385 - 390

12. Detailed cell cycle analysis in human lymphocytes; Application to γ-irradiated cells

    • J. Couturier
    • J. -L. Antoine

    Original Investigations Pages: 391 - 395

13. Ethnic distribution of phenylketonuria in the north German population

    • G. Flatz
    • Monika Oelbe
    • H. Herrmann

    Original Investigations Pages: 396 - 399

14. Inactivation pattern of the fragile X in heterozygous carriers

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

    Short Communications Pages: 400 - 401

15. Gd (+) Laguna, a new rare glucose-6-phosphate dehydrogenase variant from Brazil

    • T. A. Weimer
    • L. Schüler
    • F. M. Salzano

    Short Communications Pages: 402 - 404

16. Compoond heterozygotes in hyperphenylalaninaemia

    • K. Bartholomé
    • K. Olek
    • F. Trefz

    Short Communications Pages: 405 - 406

17. Letters to the editors

    • E. B. Hook
    • P. K. Cross

    Letter Pages: 407 - 407

18. Autosomal lesions versus fragile sites

    • Patricia N. Howard-Peebles

    Letters to the Editors Pages: 408 - 408