1. Epidemiology of neural tube defects in Germany

   • Manuela Koch
   • W. Fuhrmann

   Review Articles Pages: 97 - 103

2. Cystic kidneys

   • K. Zerres
   • M. -C. Völpel
   • H. Weiß

   Review Articles Pages: 104 - 135

3. Regional mapping of liver type 6 phosphofructokinase isoenzyme on chromosome 21

   • B. Chadefaux
   • M. O. Rethoré
   • D. Allard

   Original Investigations Pages: 136 - 137

4. Genetic polymorphism of complement C6 and haplotype analysis between C6 and C7 in a Japanese population

   • S. Nakamura
   • O. Ooue
   • K. Abe

   Original Investigations Pages: 138 - 141

5. Development and behavior of synaptonemal complexes in human spermatocytes by light and electron microscopy

   • F. Vidal
   • J. Navarro
   • J. Egozcue

   Original Investigations Pages: 142 - 147

6. The identification of a DNA polymorphism of the α fibrinogen gene, and the regional assignment of the human fibrinogen genes to 4q26-qter

   • S. E. Humphries
   • A. M. A. Imam
   • R. Williamson

   Original Investigations Pages: 148 - 153

7. The positions of three restriction fragment length polymorphisms on chromosome 4 relative to known genetic markers

   • T. C. Gilliam
   • P. Scambler
   • K. E. Davies

   Original Investigations Pages: 154 - 158

8. Distal duplication 14q: Report of three cases and further delineation of the syndrome

   • Susan L. Sklower
   • Edmund C. Jenkins
   • W. Ted Brown

   Original Investigations Pages: 159 - 164

9. Genetic linkage between erythrokeratodermia variabilis and Rh locus

   • J. G. van der Schroeff
   • L. E. Nijenhuis
   • L. N. Went

   Original Investigations Pages: 165 - 168

10. Characterization of normal and mutant adenosine deaminase messenger RNAs by translation and hybridization to a cDNA probe

    • Gwendolyn S. Adrian
    • Dan A. Wiginton
    • John J. Hutton

    Original Investigations Pages: 169 - 172

11. The association of the nucleolus and the short arm of acrocentric chromosomes with the XY pair in human spermatocytes: Its possible role in facilitating sex-chromosome acrocentric translocations

    • André Stahl
    • Michèle Hartung
    • Jean-Louis Bergé-Lefranc

    Original Investigations Pages: 173 - 180

12. The two apolipoprotein loci apoA-I and apoA-IV are closely linked in man

    • O. Schamaun
    • B. Olaisen
    • P. Teisberg

    Original Investigations Pages: 181 - 184

13. Electrophoretic variants of blood proteins in Japanese

    • Jun-ichi Asakawa
    • Chiyoko Satoh
    • Takeshi Kageoka

    Original Investigations Pages: 185 - 188

14. Folic acid and chromosome breakage. II. A methionine effect similar to that in fragile X expression

    • John A. Reidy
    • Andrew T. L. Chen

    Short Communications Pages: 189 - 190

15. Gene frequencies of S-adenosylhomocysteine hydrolase (SAHH) in a Japanese population

    • Katsunori Akiyama
    • Shigeki Nakamura
    • Kazue Abe

    Short Communications Pages: 191 - 192

16. Trisomy 14 by paternal origin

    • J. del Mazo
    • J. A. Abrisqueta

    Cases Observed Pages: 193 - 193

17. Announcement

    Announcement Pages: 194 - 194