1. Sex ratio among human embryos and newborns in a Russian population

   • N. P. Bochkov
   • A. A. Kostrova

   Original Investigations Pages: 91 - 98

2. Chromosomenmosaik 46,XY,D-,t(DqGq)+/92,XYXY,2D-,2t(DqGq)+ bei einem Säugling mit Down-Syndrom

   • H. Waller
   • M. Waller

   Originalarbeiten Pages: 99 - 104

3. The influence of inactive chromosomes on human development

   • Peter Barlow

   Original Investigations Pages: 105 - 136

4. Über die ultrastruktur menschlicher Metaphasenchromosomen

   • F. Ruzicka

   Originalarbeiten Pages: 137 - 144

5. A casuistic contribution to the XX male problem

   • Karl Sperling
   • Rudolf Kaden
   • Walter Hirsch

   Original Investigations Pages: 145 - 154

6. The Sjögren-Larsson syndrome

   • Ursel Theile
   • Mechthild Jensen

   Original Investigations Pages: 155 - 159

7. Polymorphism of C'3 in German, Bulgarian, Iranian and Angola population

   • D. D. Farhud
   • H. Walter

   Short Communications Pages: 161 - 164

8. Identification of D/D translocations in mentally retarded patients

   • Elly W. I. Raaijmakers-Engelen

   Short Communications Pages: 165 - 168

9. The occurrence of G-6-PD union in Thailand

   • V. Panich

   Short Communications Pages: 169 - 171

10. Phenotype and gene frequencies of adenosine deaminase in prague

    • P. Herzog
    • J. Bohatová

    Short Communications Pages: 173 - 174

11. Tetraphocomelia and neonatal amegakaryocytic thrombocytopenia

    • R. A. Pfeiffer
    • G. Maintz
    • C. Haneke

    Clinical Case Reports Pages: 175 - 178

12. Hereditary methemoglobinemia associated with NADH diaphorase deficiency

    • H. Ritter
    • K. Schmidt
    • J. Schmitt

    Clinical Case Reports Pages: 179 - 180