1. Protein phylogenies provide evidence of a radical discontinuity between arthropod and vertebrate immune systems

   • A. L. Hughes

   ORIGINAL PAPER Pages: 283 - 296

2. Absence of imprinting of HLA class Ia genes leads to co-expression of biparental alleles on term human trophoblast cells upon IFN-γ induction

   • Françoise Lenfant
   • Marylise Fort
   • Philippe Le Bouteiller

   ORIGINAL PAPER Pages: 297 - 304

3. Structure of the human CD94 C-type lectin gene

   • Antonio Rodríguez
   • Marta Carretero
   • M. López-Botet

   ORIGINAL PAPER Pages: 305 - 309

4. HLA-DRB1 amino acid disparity is the major stimulus of interleukin-2 production by alloreactive helper T-lymphocytes

   • N. T. Young
   • D. L. Roelen
   • Ken I. Welsh

   ORIGINAL PAPER Pages: 310 - 317

5. Analysis of zebrafish Mhc using BAC clones

   • Robert Graser
   • Vladimir Vincek
   • Jan Klein

   ORIGINAL PAPER Pages: 318 - 325

6. Identification of two quantitative trait loci involved in antibody production on mouse chromosome 8

   • A. Puel
   • Jean-Claude Mevel
   • D. Mouton

   COMPLEX TRAITS Pages: 326 - 331

7. Molecular cloning of the woodchuck cytokines: TNF-α, IFN-γ, and IL-6

   • Beate Lohrengel
   • Mengji Lu
   • M. Roggendorf

   BRIEF COMMUNICATION Pages: 332 - 335

8. Tec-family non-receptor tyrosine kinase expressed in zebrafish kidney

   • Robert N. Haire
   • Scott J. Strong
   • G. W. Litman

   SEQUENCE REGISTER Pages: 336 - 337