1. Four new cases of dicentric Y chromosomes

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

   Original Investigations Pages: 249 - 260

2. Benzpyrene-Induced sister chromatid exchanges in lymphocytes of patients with lung cancer

   • A. Dorothee Schönwald
   • C. R. Bartram
   • H. W. Rüdiger

   Original Investigations Pages: 261 - 264

3. Determination of prenatal sex ratio in man

   • Masaharu Yamamoto
   • Takashi Ito
   • Gen-ichi Watanabe

   Original Investigations Pages: 265 - 269

4. The Coffin syndrome

   • J. P. Fryns
   • L. Vinken
   • H. van den Berghe

   Original Investigations Pages: 271 - 276

5. Origin of the translocated segment of the 14q+ marker in non-Burkitt lymphomas

   • J. Mark
   • C. Ekedahl
   • A. Hagman

   Original Investigations Pages: 277 - 282

6. Fluorescent C bands of human chromosomes with 33 258 Hoechst stain

   • Tchaw-ren Chen

   Original Investigations Pages: 283 - 288

7. Characterization of α-galactosidase isoenzymes in normal and fabry human-Chinese hamster somatic cell hybrids

   • Mic N. Hamers
   • Andries Westerveld
   • Joseph M. Tager

   Original Investigations Pages: 289 - 297

8. Mithramycin and DIPI: A pair of fluorochromes specific for GC- and AT-rich DNA respectively

   • W. Schnedl
   • M. Breitenbach
   • G. Stranzinger

   Original Investigations Pages: 299 - 305

9. Serum hexosaminidase activity in I-cell disease carriers

   • Jaclyn Vidgoff
   • Neil R. M. Buist

   Original Investigations Pages: 307 - 316

10. Residual family resemblance for PTC taste sensitivity

    • D. C. Rao
    • N. E. Morton

    Original Investigations Pages: 317 - 320

11. Psychophysiologic test performance in normal twins and in a pair of identical twins with essential tremor that is suppressed by alcohol

    • P. Propping

    Original Investigations Pages: 321 - 325

12. Three glucose 6-phosphate dehydrogenase variants found in Japan

    • Shiro Miwa
    • Koji Nakashima
    • Eitaro Suzuki

    Original Investigations Pages: 327 - 334

13. Variants of galactose-1-phosphate uridyl transferase in the Greek populations

    • A. Thomakos
    • E. Beutler
    • G. Stamatoyannopoulos

    Original Investigations Pages: 335 - 339

14. Partial deletion of the long arm of chromosome No. 13

    • A. Cuschieri
    • P. Vassallo Agius
    • J. M. J. C. Scheres

    Clinical Case Reports Pages: 341 - 344

15. Ring 11 chromosome (46,XX,r11(p15q25))

    • Mario Valente
    • Helga Muller
    • Robert S. Sparkes

    Clinical Case Reports Pages: 345 - 350

16. Mosaic 45,X/47,XY,+18

    • Françoise Serville
    • D. Fontan
    • P. Verger

    Clinical Case Reports Pages: 351 - 353

17. IVth International Workshop on Human Gene Mapping

    • John L. Hamerton

    Notes Pages: I - I

18. Announcement

    Announcement Pages: II - II