1. Partial monosomy 13 and 21 due to a familial 13/21 translocation

   • Priscila Guimarães Otto
   • Sergio Toledo
   • Sanae Kasahara

   Original Investigations Pages: 243 - 250

2. A dynamic study in two new cases of X chromosome translocations

   • M. G. Mattei
   • J. F. Mattei
   • F. Giraud

   Original Investigations Pages: 251 - 257

3. Chromosomal aberrations in heavy smokers

   • Günter Obe
   • Jan Herha

   Original Investigations Pages: 259 - 263

4. Four cases of chromosome changes detected in course of prenatal diagnosis and probably originating in vitro

   • Jan Wahlström

   Original Investigations Pages: 265 - 268

5. Structural aberrations of the X chromosome in man

   • E. F. Davidenkova
   • D. K. Verlinskaja
   • M. V. Mashkova

   Original Investigations Pages: 269 - 279

6. A new cytogenetic aspect of polycythemia vera

   • F. Shabtai
   • S. Weiss
   • I. Halbrecht

   Original Investigations Pages: 281 - 287

7. Analysis of banding patterns and mosaic configurations in a case of ring chromosome 15

   • M. Schmid
   • I. Henrichs
   • W. Krone

   Original Investigations Pages: 289 - 299

8. Analysis of the HLA-ABC linkage disequilibrium: Decreasing strength of gametic association with increasing map distance

   • C. Hiller
   • Marlies Bischoff
   • K. Bender

   Original Investigations Pages: 301 - 312

9. On the incidence of unilateral and bilateral colour blindness in heterozygous females

   • Kurt Feig
   • Hans-Hilger Ropers

   Original Investigations Pages: 313 - 323

10. Juvenile sandhoff disease: Complementation tests with Sandhoff and Tay-Sachs disease using polyethylene glycol-induced cell fusion

    • Stephen Wood

    Original Investigations Pages: 325 - 329

11. Inherited congenital normofunctional testicular hyperplasia and mental deficiency

    • J. M. Cantú
    • H. E. Scaglia
    • G. Pérez-Palacios

    Original Investigations Pages: 331 - 339

12. The two human lactosylceramidases and their respective enzyme activity deficiency diseases: Inhibition studies using p-nitrophenyl-β-D-galactoside

    • K. Harzer

    Original Investigations Pages: 341 - 345

13. Genetic markers in Malaysians: Variants of soluble and mitochondrial glutamic oxaloacetic transaminase and salivary and pancreatic amylase, phosphoglucomutase III and saliva esterase polymorphisms

    • Y. S. Teng
    • S. G. Tan
    • L. E. Lie-Injo

    Original Investigations Pages: 347 - 354

14. No association of red cell adenylate kinase phenotypes with affective disorders

    • G. Beckman
    • L. Beckman
    • E. Strandman

    Short Communications Pages: 355 - 357

15. A further case of a 22;22 Robertsonian translocation associated with recurrent abortions

    • M. Mameli
    • S. Cardia
    • M. Seabright

    Clinical Case Reports Pages: 359 - 361

16. Karyotype-phenotype correlation: Mosaic trisomy 8 and partial trisomies of different segments of chromosome 8

    • Vincent M. Riccardi
    • Barbara F. Crandall

    Letters to the Editors Pages: 363 - 367