1. Sister chromatid exchanges and heterochromatin

   • Ingo Schubert
   • Rigomar Rieger

   Review Articles Pages: 119 - 130

2. Pericentric inversions of chromosome 12 in two families

   • F. Prieto
   • L. Badía
   • M. -J. Figuera

   Original Investigations Pages: 131 - 133

3. Detection of G-C rich heterochromatin by 5-azacytidine in mammals

   • Evani Viegas-Péquignot
   • Bernard Dutrillaux

   Original Investigations Pages: 134 - 137

4. The genes for growth hormone and chorionic somatomammotropin are on the long arm of human chromosome 17 in region q21→qter

   • Donna L. George
   • John A. Phillips III
   • Peter H. Seeburg

   Original Investigations Pages: 138 - 141

5. Gene dosage effect for GALT in 9p trisomy and in 9p tetrasomy with an improved technique for GALT determination

   • P. Eydoux
   • C. Junien
   • C. Gregori

   Original Investigations Pages: 142 - 144

6. Arthrogryposis-like signs in trisomy 18

   • J. C. Lambert
   • M. Ferrari
   • R. Mariani

   Original Investigations Pages: 145 - 147

7. The “Cat Eye syndrome”: Dicentric small marker chromosome probably derived from a No. 22 (Tetrasomy 22pter→q11) associated with a characteristic phenotype

   • A. Schinzel
   • W. Schmid
   • Roberta A. Pagon

   Original Investigations Pages: 148 - 158

8. The turner phenotype and the different types of human X isochromsome

   • Priscila G. Otto
   • Angela M. Vianna-Morgante
   • Anita Wajntal

   Original Investigations Pages: 159 - 164

9. Multiple cytogenetically abnormal clones in two polycythemia vera patients

   • Joseph R. Testa
   • Jeffrey R. Kanofsky
   • Joseph M. Baron

   Original Investigations Pages: 165 - 168

10. A radioenzymatic assay of catechol-O-methyltransferase in hair root cells: Comparison with erythrocyte activity

    • J. J. Hoo
    • T. Strohmeyer
    • H. W. Goedde

    Original Investigations Pages: 169 - 171

11. Search for a relationship between molecular anomalies of the mutant erythrocyte pyruvate kinase variants and their pathological expression

    • Axel Kahn
    • Joelle Marie
    • Albert Najman

    Original Investigations Pages: 172 - 175

12. Distribution of α₁-(PI) phenotypes in chromosome abnormalities

    • John C. Mulley
    • Grant R. Sutherland

    Original Investigations Pages: 176 - 179

13. Distances électrophorétiques entre l'Homme, le Chimpanzé (Pan troglodytes) et le Gorille (Gorilla gorilla) basées sur la mobilité des enzymes érythrocytaires

    • G. Lucotte
    • J. Lefebvre

    Original Investigations Pages: 180 - 184

14. HGPRT structural gene mutation in Lesch-Nyhan-syndrome as indicated by antigenic activity and reversion of the enzyme deficiency

    • Michael Strauss
    • Lieselotte Lübbe
    • Erhard Geissler

    Original Investigations Pages: 185 - 188

15. Phenotypic interaction studies of HPRT mutant and normal human fibroblasts

    • I. Willers
    • S. Singh
    • H. W. Goedde

    Original Investigations Pages: 189 - 191

16. The genetic structure of the Kuwaiti population

    • Khaled E. Al-Nassar
    • P. Michael Conneally
    • Pao-lo Yu

    Original Investigations Pages: 192 - 198

17. Chromosome banding and compaction

    • A. Leth Bak
    • A. Lund Jørgensen
    • J. Zeuthen

    Short Communication Pages: 199 - 202

18. Lack of position effect on the activity of SOD^Cu/Zn gene in subjects with 21/D and 21/G robertsonian translocations

    • N. Crosti
    • A. Rigo
    • A. Serra

    Short Communication Pages: 203 - 204

19. Further evidence against linkage between christ-siemens-touraine (CST) and XG loci

    • E. A. Chautard-Freire-Maia
    • S. L. Primo-Parmo
    • N. Freire-Maia

    Short Communication Pages: 205 - 206

20. Ring (15) chromosome

    • Emilio Yunis
    • Myriam Leibovici
    • Luis Quintero

    Clinical Case Reports Pages: 207 - 209

21. Partial monosomy 7q syndrome due to distal interstitial deletion

    • Richard Stallard
    • Richard C. Juberg

    Clinical Case Reports Pages: 210 - 213

22. Interstitial deletion (2)(p13p15)

    • Daniela Duca
    • Doina Ioan
    • C. Maximilian

    Clinical Case Reports Pages: 214 - 216

23. Heritable fragile sites on human chromosomes

    • Grant R. Sutherland
    • Lynene Hinton

    Clinical Case Reports Pages: 217 - 219

24. SOD-A and chromosome 21

    • N. J. Leschot
    • R. M. Slater
    • J. J. de Nef

    Clinical Case Reports Pages: 220 - 223

25. Serial duplication of 10 (q21→q22) in a mentally retarded boy with congenital malformations

    • Maila Koivisto
    • Riitta Herva
    • Sirkka-Liisa Linna

    Clinical Case Reports Pages: 224 - 225

26. Combined erythrocyte glucosephosphate isomerase (GPI) and glucose-6-phosphate dehydrogenase (G6PD) deficiency in an italian family

    • H. Arnold
    • G. W. Löhr
    • R. Ludwig

    Clinical Case Reports Pages: 226 - 229