1. Recurrent mutation pressure does not explain the prevalence of the marker (X) syndrome

   • F. Vogel
   • J. Krüger
   • E. Schwinger

   Original Investigations Pages: 1 - 6

2. Replication of X chromosomes in complete moles

   • Masato Tsukahara
   • Tadashi Kajii

   Original Investigations Pages: 7 - 10

3. Genetic linkage heterogeneity in the fragile X syndrome

   • W. T. Brown
   • Anne C. Gross
   • E. C. Jenkins

   Original Investigations Pages: 11 - 18

4. Inversion (14)(q12qter) or (q11.2q32.3): The most frequently acquired rearrangement in lymphocytes

   • A. Aurias
   • J. Couturier
   • V. Volobouev

   Original Investigations Pages: 19 - 21

5. Origin of human triosephosphate isomerase isozymes: Further evidence for the single structural locus hypothesis with Japanese variants

   • Jun-ichi Asakawa
   • Shozo Iida

   Original Investigations Pages: 22 - 26

6. Alpha-1-antitrypsin: Evidence for a fifth PI M subtype and a new deficiency allele PI^*Z_Augsburg

   • S. Weidinger
   • W. Jahn
   • F. Schwarzfischer

   Original Investigations Pages: 27 - 29

7. Phenotype and gene frequencies of acid phosphatase (s-AcP) in the human parotid saliva

   • Shigenori Ikemoto
   • Hiroshi Hinohara
   • Koichi Tomita

   Original Investigations Pages: 30 - 32

8. Definitive localization of Becker muscular dystrophy in Xp by linkage to a cluster of DNA polymorphisms (DXS43 and DXS9)

   • S. Fadda
   • M. Mochi
   • G. Romeo

   Original Investigations Pages: 33 - 36

9. Probable assignment of soluble isocitrate dehydrogenase (IDH₁) to 2q33.3

   • K. Narahara
   • S. Kimura
   • H. Kimoto

   Original Investigations Pages: 37 - 40

10. An EcoRI restriction fragment length polymorphism (RFLP) in the human c-erb A locus

    • D. Mathieu-Mahul
    • Qi De Xu
    • C. J. Larsen

    Original Investigations Pages: 41 - 44

11. Genetic polymorphism of human factor I (C3b inactivator)

    • S. Nakamura
    • K. Abe

    Original Investigations Pages: 45 - 48

12. Molecular evidence of triplication in the haptoglobin Johnson variant gene

    • Salvatore Oliviero
    • Mario DeMarchi
    • Giovanni Raugei

    Original Investigations Pages: 49 - 52

13. Selective interactions among Rh, ABO, and sex ratio of newborns

    • C. Y. Valenzuela
    • R. Walton

    Original Investigations Pages: 53 - 57

14. Immunofixation for C2 typing: C2 allotypes in Spaniards in relation to HLA, Bf and C4

    • J. R. Regueiro
    • A. Arnaiz-Villena

    Original Investigations Pages: 58 - 61

15. Genetic linkage relationships of seven DNA probes with Duchenne and Becker muscular dystrophy

    • C. S. Brown
    • N. S. T. Thomas
    • P. S. Harper

    Original Investigations Pages: 62 - 74

16. Identification of a deletion in the low density lipoprotein (LDL) receptor gene in a patient with familial hypercholesterolaemia

    • B. Horsthemke
    • Anna M. Kessling
    • S.E. Humphries

    Original Investigations Pages: 75 - 78

17. A new MspI restriction fragment length polymorphism in the hemophilia B locus

    • G. Camerino
    • I. Oberlé
    • J. L. Mandel

    Short Communications Pages: 79 - 81

18. G-6-PD Jalisco and G-6-PD Morelia: Two new Mexican variants

    • G. Vaca
    • B. Ibarra
    • E. Beutler

    Short Communications Pages: 82 - 85

19. Scalp defect associated with postaxial polydactyly: Confirmation of a distinct entity with autosomal dominant inheritance

    • M. Buttiëns
    • J. P. Fryns
    • H. Van den Berghe

    Clinical Case Reports Pages: 86 - 88

20. Maple syrup urine disease: Two different forms within a single family

    • J. Frézal
    • O. Amédée-Manesme
    • J. M. Saudubray

    Clinical Case Reports Pages: 89 - 91

21. Increased birth weight in psoriasis —Another expression of a “thrifty genotype”?

    • P. Propping
    • Charlotte Hohenschutz
    • V. Voigtländer

    Letters to the Editors Pages: 92 - 92