1. Risk for recombinants in pericentric inversions of the (p11→q21) region of chromosome 18

   • V. Vigi
   • Paola Maraschio
   • M. Fraccaro

   Original Articles Pages: 1 - 5

2. Parental origin of the extra chromosome in Down's syndrome

   • R. E. Magenis
   • K. M. Overton
   • E. Lovrien

   Original Investigations Pages: 7 - 16

3. Partial trisomy 8q in half-sisters with distinct dysmorphic patterns not similar to the trisomy 8 mosaicism syndrome

   • A. Schinzel

   Original Investigations Pages: 17 - 26

4. Sister chromatid exchanges in balanced translocation carriers and in patients with unbalanced karyotypes

   • C. Stoll
   • D. S. Borgaonkar
   • P. Bigel

   Original Investigations Pages: 27 - 32

5. Karyotyping of bone-marrow cells in hematologic diseases

   • H. G. Morse
   • J. R. Humbert
   • A. Robinson

   Original Investigations Pages: 33 - 39

6. HLA-A, B, C gene and haplotype frequencies in Vienna

   • Wolfgang R. Mayr

   Original Investigations Pages: 41 - 48

7. The red-cell glutamic-pyruvate transaminase, carbonic anhydrase I and II and esterase D polymorphisms in the Ambo populations of South West Africa, with evidence for the existence of an EsD ⁰ allele

   • Marion P. Marks
   • Trefor Jenkins
   • G. T. Nurse

   Original Investigations Pages: 49 - 54

8. Human DNA replication: Fiber autoradiographic analysis of diploid cells from normal adults and from Fanconi's anemia and ataxia telangiectasia

   • Roger Hand

   Original Investigations Pages: 55 - 64

9. Localization of chromatid breaks in Fanconi's anemia, using three consecutive stains

   • B. Dutrillaux
   • J. Couturier
   • G. Schaison

   Original Investigations Pages: 65 - 71

10. Frequency of Ag-stained nucleolus organizer regions in the acrocentric chromosomes of man

    • A. V. Mikelsaar
    • M. Schmid
    • W. Schnedl

    Short Communications Pages: 73 - 77

11. Combined silver staining of the nucleolus organizing regions and Giemsa banding in human chromosomes

    • H. Zankl
    • S. Bernhardt

    Short Communications Pages: 79 - 80

12. Recurrent abortion associated with a balanced 22;22 translocation, or isochromosome 22q in a monozygous twin

    • B. V. Lewis
    • M. A. C. Ridler

    Short Communications Pages: 81 - 85

13. Ring chromosome 4 and wolf syndrome

    • Amalia Pérez-Castillo
    • J. A. Abrisqueta

    Clinical Case Reports Pages: 87 - 91

14. Short-arm deletion of an X chromosome (45,XO/46,XX p-)

    • P. Kaiser
    • K. Gerhard-Ratschow
    • E. Daume

    Clinical Case Reports Pages: 93 - 96

15. Familial t(X;2) (p223;q323) with partial trisomy 2q and male and female balanced carriers

    • Catherine Turleau
    • Françoise Chavin-Colin
    • P. Beauvais

    Clinical Case Reports Pages: 97 - 104

16. Partial trisomy 14q due to familial t(14q-, 11q+) translocation

    • J. P. Fryns
    • M. Van Eygen
    • H. Van Den Berghe

    Clinical Case Reports Pages: 105 - 110

17. 47,XY,+der(11;22)(q23;q12) following balanced translocation t(11;22)(q23;q12)mat

    • E. Kessel
    • R. A. Pfeiffer

    Clinical Case Reports Pages: 111 - 116

18. Pure gonadal dysgenesis (Type XX)

    • H. R. S. de Nazareth
    • L. M. S. Farah
    • F. J. P. B. Vieira

    Clinical Case Reports Pages: 117 - 120

19. Dispermic origin of a 69,XXY triploid

    • Nora L. Blackwell
    • Jean W. Keeling
    • Richard H. Lindenbaum

    Clinical Case Reports Pages: 121 - 124