1. Human complementary component C′3

   • P. K. Seth
   • S. Seth

   Review Articles Pages: 201 - 211

2. A new case of trisomy for the distal part of 13q due to maternal translocation, t(9;13)(p21;q21)

   • M. Jotterand
   • E. Juillard

   Original Investigations Pages: 213 - 222

3. Familial C/D translocation t(9;13)(9p23;13q21) in a male associated with recurrent abortion

   • D. Pal Singh-Kahlon
   • A. Serra

   Original Investigations Pages: 223 - 230

4. Normal meiosis in two 47,XYY men

   • Ann C. Chandley
   • Judith Fletcher
   • Jacqueline A. Robinson

   Original Investigations Pages: 231 - 240

5. Follow-up till age 3–4 of unselected children with sex chromosome abnormalities

   • Johannes Nielsen
   • Ingelise Sillesen

   Original Investigations Pages: 241 - 257

6. Fine structure of 33 258 H-treated chromosomes

   • H. G. Schwarzacher
   • A. Gropp
   • F. Ruzicka

   Original Investigations Pages: 259 - 262

7. The human leukocyte test system

   • Günter Obe
   • Karola Brandt
   • Bernd Beek

   Original Investigations Pages: 263 - 268

8. Evidence that chromosome band 22q12 is concerned with cell proliferation in chronic myeloid leukaemia

   • Peter H. Fitzgerald

   Original Investigations Pages: 269 - 274

9. Bf polymorphism: Study of a new variant (F 0.55)

   • G. Hauptmann
   • M. M. Tongio
   • S. Mayer

   Original Investigations Pages: 275 - 278

10. Heterogeneity of Dyggve-Melchior-Clausen dwarfism

    • J. Spranger
    • B. Bierbaum
    • J. Herrmann

    Original Investigations Pages: 279 - 287

11. Familial occurrence of gonadal tumors in XY females with breast development

    • K. Boczkowski

    Original Investigations Pages: 289 - 294

12. Chromosome preparations from microplate cultures of man, dog, rat, and mouse

    • B. de Jong
    • G. J. P. A. Anders
    • Ingrid H. van der Meer

    Original Investigations Pages: 295 - 298

13. Rapid prenatal diagnosis of GM₁-gangliosidosis using microchemical methods

    • W. J. Kleijer
    • E. Van der Veer
    • M. F. Niermeijer

    Original Investigations Pages: 299 - 305

14. Sunshine and the geographical distribution of the alleles of the Gc system of plasma proteins

    • Arthur E. Mourant
    • Don Tills
    • Kazimiera Domaniewska-Sobczak

    Original Investigations Pages: 307 - 314

15. HMC syndrome in identical twins

    • W. Schweckendiek
    • U. Hillig
    • G. G. Wendt

    Short Communications Pages: 315 - 318

16. Polymorphism of properdin factor B in South African Negroid, Indian and Colored populations

    • G. Mauff
    • F. D. Gauchel
    • H. W. Hitzeroth

    Short Communications Pages: 319 - 322

17. A familial tetraphocomelia syndrome involving limb deformities, cleft lip, cleft palate, and associated anomalies —A new syndrome

    • Kiran Kucheria
    • S. K. Bhargava
    • P. Bhutani

    Clinical Case Reports Pages: 323 - 326

18. Unbalanced 13q/21q translocation: A revised study of the case previously reported as 21-monosomy

    • Tatsuro Ikeuchi
    • Ikuko Kondo
    • Tsukasa Hattori

    Clinical Case Reports Pages: 327 - 330

19. Tertiary trisomy, 47,XX,+14q-, resulting from maternal balanced translocation, 46,XX,t(14;16)(q11;q24)

    • S. Robert Young
    • Denis M. Donovan
    • David C. Potter

    Clinical Case Reports Pages: 331 - 334

20. Translocation de l'Y sur un autosome et hypogonadisme

    • S. Warter
    • J. L. Ratel

    Clinical Case Reports Pages: 335 - 336

21. Center for barr body condensation. A case of Turner's syndrome with 45,X/46,X,dic(X) (Xqter→ p22::p22→qter)

    • Ingelise Sillesen
    • Kirsten Rasmussen
    • Johannes Nielsen

    Clinical Case Reports Pages: 337 - 340

22. Spermatogenesis in an infertile XYY man

    • Michael Faed
    • Janet Robertson
    • J. Grieve

    Clinical Case Reports Pages: 341 - 347