1. X-Chromosome replication in parthenogenic benign ovarian teratomas

   • Barbara Kaiser McCaw
   • Samual A. Latt

   Original Investigations Pages: 253 - 264

2. Alpha-1-antitrypsin phenotypes in a group of newborn infants in Somalia

   • Guido Massi
   • Fabio M. Vecchio

   Original Investigations Pages: 265 - 269

3. The frequency and distribution of sister chromatid exchanges in human chromosomes

   • William F. Morgan
   • Peter E. Crossen

   Original Investigations Pages: 271 - 278

4. Evidence for postmeiotic expression of ribosomal RNA genes during male gametogenesis

   • M. Schmid
   • F. J. Hofgärtner
   • W. Engel

   Original Investigations Pages: 279 - 284

5. Intellectual level (IQ) in heterozygotes for phenylketonuria (PKU)

   • O. Thalhammer
   • Liselotte Havelec
   • Eva Wehle

   Original Investigations Pages: 285 - 288

6. The vitamin D binding of the common and rare variants of the group-specific component (Gc)

   • H. Cleve
   • W. Patutschnick

   Original Investigations Pages: 289 - 296

7. Bloom's syndrome: DNA replication in cultured fibroblasts and lymphocytes

   • Roger Hand
   • James German

   Original Investigations Pages: 297 - 306

8. LBA technique in the detection of chromosome variants

   • Y. Nakagome
   • S. Oka
   • E. Matsunaga

   Original Investigations Pages: 307 - 314

9. Improved detection of β-thalassaemia carriers by a two-test method

   • M. Tammis-Hadjopoulos
   • R. J. M. Gold
   • C. R. Scriver

   Original Investigations Pages: 315 - 324

10. Classification of α ₁-antitrypsin (Pi) phenotypes by isoelectrofocusing

    • Th. Genz
    • J. -P. Martin
    • H. Cleve

    Original Investigations Pages: 325 - 332

11. New phenotypes of serum α ₁-antitrypsin in Japanese detected by gel slab isoelectric focusing

    • Shoji Harada
    • Kazuhiko Miyake
    • Toshitsugu Oda

    Original Investigations Pages: 333 - 336

12. A case of (13q;18q) translocation with proximal 13q monosomy

    • Yasuyuki Suzuki
    • Kazuo Ono
    • Yasuo Nakagome

    Clinical Case Reports Pages: 337 - 341

13. Partial monosomy of the long arm of chromosome 16 in a malformed newborn: Karyotype 46,XX,del(16)(q21)

    • J. P. Fryns
    • S. Melchoir
    • H. van den Berghe

    Clinical Case Reports Pages: 343 - 346

14. Partial trisomy 16q-

    • Emilio Yunis
    • José T. González
    • Olga M. Torres de caballero

    Clinical Case Reports Pages: 347 - 350

15. Nonmosaic 46,X,r(Y) karyotype with female phenotype

    • J. László
    • Magdolna Gaál
    • P. Bósze

    Clinical Case Reports Pages: 351 - 356

16. A casuistic report on the Gruber or Meckel syndrome

    • P. Altmann
    • P. Wagenbichler
    • A. Schaller

    Clinical Case Reports Pages: 357 - 362

17. Šereševskij-Turner's syndrome or Turner's syndrome

    • Nils C. Lønberg
    • Johannes Nielsen

    Letters to the Editors Pages: 363 - 364

18. Ring 13 or ring 14: distinction by banding analysis of a culture derived from tissue frozen for 10 years

    • Robert S. Sparkes
    • Helga Muller
    • Robert E. Carrel

    Letters to the Editors Pages: 365 - 366