1. Announcement to the contributors of Human Genetics

   Announcement Pages: I - II

2. The Papillon-Lefèvre syndrome: Keratosis palmoplantaris with periodontopathy

   • E. Haneke

   Review Articles Pages: 1 - 35

3. Partial duplication of the long arm of chromosome 5: A case due to balanced paternal translocation and review of the literature

   • Larry A. Jones
   • Diane K. Jordan
   • Joseph K. Toth

   Original Investigations Pages: 37 - 42

4. Ring chromosome 15 syndrome

   • J. P. Fryns
   • J. Timmermans
   • H. van den Berghe

   Original Investigations Pages: 43 - 48

5. Presumptive long arm deletion of chromosome 8: a new syndrome?

   • K. Taysi
   • M. J. Noetzel
   • A. W. Strauss

   Original Investigations Pages: 49 - 53

6. Partial trisomy 4 resulting from a complex maternal rearrangement of chromosomes 2, 4, and 18 with interstitial translocation

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

   Original Investigations Pages: 55 - 61

7. Partial trisomy 11q as the result of sporadic translocation

   • I. W. Lurie
   • G. I. Lazjuk
   • D. B. Gurevich

   Original Investigations Pages: 63 - 66

8. Trisomy 6p22→6pter due to familial t(6;13)(p22;q34 or 33) translocation

   • G. Rosi
   • G. Venti
   • R. Armellini

   Original Investigations Pages: 67 - 72

9. Absence of chromosome breakage in patients with retinoblastoma

   • Louise A. Knight
   • H. Allen Gardner
   • Brenda L. Gallie

   Original Investigations Pages: 73 - 78

10. Detection of rare major genes in lipid levels

    • J. Ott

    Original Investigations Pages: 79 - 91

11. Frequency of sister chromatid exchanges in a balanced reciprocal whole-arm translocation

    • Anne M. Schober
    • Christa Fonatsch
    • Otmar Schober

    Original Investigations Pages: 93 - 97

12. Condensation of all human chromosomes in phase G2 and early mitosis can be drastically inhibited by 33258-Hoechst treatment

    • Menashe Marcus
    • Ruth Goitein
    • Alfred Gropp

    Original Investigations Pages: 99 - 105

13. Kinetic and electrophoretic studies of human erythrocytes deficient in pyrimidine 5′-nucleotidase

    • Kenji Shinohara
    • Kouichi R. Tanaka

    Original Investigations Pages: 107 - 111

14. Antenatal diagnosis of a de novo reciprocal translocation 46,XX,t(3;7)(q21;q11)

    • P. Husslein
    • W. Schnedl
    • P. Wagenbichler

    Clinical Case Reports Pages: 113 - 116