1. The delivery of genetic counseling services in Europe

   • E. Passarge
   • F. Vogel
   • R. Witkowski

   Review Articles Pages: 1 - 5

2. Methods for analysis of the mutagenicity of indirect mutagens/carcinogens in eukaryotic cells

   • Stephan Madle
   • Günter Obe

   Review Articles Pages: 7 - 20

3. The 11q;22q translocation: A European collaborative analysis of 43 cases

   • M. Fraccaro
   • J. Lindsten
   • O. Zuffardi

   Original Investigations Pages: 21 - 51

4. Retinoblastoma: Host resistance and 13q- chromosomal deletion

   • Ei Matsunaga

   Original Investigations Pages: 53 - 58

5. Chromosomal studies of leukemic and preleukemic Fanconi's anemia patients

   • Roland Berger
   • Alain Bernheim
   • Gérard Schaison

   Original Investigations Pages: 59 - 62

6. Prefixation chromosome banding with heparin

   • Maria Simeonova
   • E. Tchacarov

   Original Investigations Pages: 63 - 66

7. Chromosome variants in children referred for cytogenetic examination from two paediatric departments during a 12-year-period

   • B. Krag-Olsen
   • J. Nielsen
   • S. Yanagisawa

   Original Investigations Pages: 67 - 69

8. Kinetics of DNA replication in a dicentric X chromosome formed by long arm to long arm fusion

   • Cheng W. Yu
   • Harold Chen
   • Joe Morrison

   Original Investigations Pages: 71 - 79

9. Genetic heterogeneity of Fanconi's anemia demonstrated by somatic cell hybrids

   • Sabine Zakrzewski
   • K. Sperling

   Original Investigations Pages: 81 - 84

10. Antagonistic effect of cocultivation on mitomycin C-induced aberration rate in cells of a patient with Fanconi's anemia and in Chinese hamster ovary cells

    • Sabine Zakrzewski
    • K. Sperling

    Original Investigations Pages: 85 - 88

11. Nonrandom distribution of exchange points in patients with reciprocal translocations

    • Claude Stoll

    Original Investigations Pages: 89 - 93

12. Has diagnostic ultrasound mutagenic effects?

    • Rolf-Dieter Wegner
    • Günter Obe
    • Michael Meyenburg

    Original Investigations Pages: 95 - 98

13. Genetic heterogeneity of glucose 6-phosphate dehydrogenase deficiency in Sardinia

    • U. Testa
    • T. Meloni
    • L. Luzzatto

    Original Investigations Pages: 99 - 105

14. Pi ^Zpratt : A new alpha₁-antitrypsin allele in an American negro family

    • George Hug
    • Gail Chuck
    • Magne K. Fagerhol

    Original Investigations Pages: 107 - 110

15. Q- and C-band polymorphisms in patients with ovarian or breast carcinoma

    • Sirje Kivi
    • A. -V. Mikelsaar

    Short Communications Pages: 111 - 114

16. On the structure and polymorphism of the human chromosome no. 15

    • Franz Wachtler
    • Regine Musil

    Short Communications Pages: 115 - 118

17. Subtypes of the phosphoglucomutase-1 (PGM ₁) locus detectable in Polish populations by isoelectric focusing on cellogel

    • Tadeusz Dobosz
    • Piotr Kozioŀ

    Short Communications Pages: 119 - 121

18. Different sensitivity of diploid and trisomic cells from patients with Down syndrome mosaic after treatment with the trifunctional alkylating agent trenimon

    • Peter Aldenhoff
    • Rolf-Dieter Wegner
    • Karl Sperling

    Short Communications Pages: 123 - 125

19. On estimating penetrance of the retinoblastoma gene

    • Ei Matsunaga

    Letters to the Editors Pages: 127 - 128