1. Which came first, MHC class I or class II?

   • Martin F. Flajnik
   • Camilo Canel
   • Masanori Kasahara

   Hypothesis Pages: 295 - 300

2. Nomenclature for factors of the HLA system, 1990

   Nomenclature Pages: 301 - 309

3. HLA class I nucleotide sequences, 1991

   • Jacqueline Zemmour
   • Peter Parham

   Reviews Pages: 310 - 320

4. HLA class II nucleotide sequences, 1991

   • Steven G. E. Marsh
   • Julia G. Bodmer

   Reviews Pages: 321 - 334

5. Alternatively spliced RNAs encode several isoforms of CD46 (MCP), a regulator of complement activation

   • Damian F. J. Purcell
   • Sarah M. Russell
   • Ian F. C. McKenzie

   Original Articles Pages: 335 - 344

6. Effects of non-MHC loci on resistance to retrovirus-induced immunodeficiency in mice

   • Masahiko Makino
   • Wendy F. Davidson
   • Herbert C. Morse III

   Original Articles Pages: 345 - 351

7. Molecular cloning of the gene coding for the human T cell differentiation antigen CD7

   • Kazuhiro Yoshikawa
   • Masao Seto
   • Toshitada Takahashi

   Original Articles Pages: 352 - 360

8. Differential expression of the five C4-related genes of H-2 ^w7mice

   • Zhi-Ming Huang
   • Morinobu Takahashi
   • Masaru Nonaka

   Original Articles Pages: 361 - 366

9. Independent gene duplications, not concerted evolution, explain relationships among class I MHC genes of murine rodents

   • Austin L. Hughes

   Original Articles Pages: 367 - 373

10. Detection of novel sequence heterogeneity and haplotypic diversity of HLA class II genes

    • Pere Santamaria
    • Michael T. Boyce-Jacino
    • Stephen S. Rich

    Original Articles Pages: 374 - 387

11. HLA antigens and risk for development of pemphigus foliaceus (fogo selvagem) in endemic areas of Brazil

    • J. Roberto Moraes
    • M. Elisa Moraes
    • Peter Stastny

    Original Articles Pages: 388 - 391

12. Somatic cell mutants distinguish CD44 expression and hyaluronic acid binding

    • Robert Hyman
    • Jayne Lesley
    • Roberta Schulte

    Brief Communications Pages: 392 - 395

13. Molecular cloning of the CD3ɛ subunit of the T-cell receptor /CD3 complex in dog

    • Richard A. Nash
    • Uwe Scherf
    • Rainer Storb

    Brief Communications Pages: 396 - 398

14. Polymorphism of the class II gene of rat major histocompatibility complex, RT1: partial sequence comparison of the first domain of the RT1.Bβ 1 alleles

    • Hiroaki Fujii
    • Mitsuaki Kakinuma
    • Takashi Natori

    Gene-antigen Register Pages: 399 - 403

15. Full length β chain cDNAs of DQw9 and DQw8 molecules encode proteins that differ only at amino acid 57

    • Roberto Giorda
    • Emilia Turco
    • Massimo Trucco

    Gene-antigen Register Pages: 404 - 408

16. The contribution of beta-strand residues to serologic epitopes on the A _β ^k polypeptide

    • Barbara N. Beck
    • Allan E. Nilson
    • David J. McKean

    Gene-antigen Register Pages: 409 - 412

17. E _b ^z of NZW mice is identical with E _b ^u of B10.PL mice

    • H. Nishimura
    • H. Okamoto
    • T. Shirai

    Letter to the Editor Pages: 413 - 414