This set reports the results of the 10th International Histocompatibility Workshop, in which 362 laboratories collaborated over a three year period in research projects on the classification of HLA genes and their products. "Volume 1" describes the experimental design of the workshop studies and their results. "Volume 2" is a collection of papers on the latest developments in the molecular biology of HLA systems. Immunobiology of HLA is a valuable reference for tissue typing laboratories, blood banks, and general research programs on HLA and related diseases because it identifies common sources of HLA genes and gene products to be used as reference reagents, and because it is the only complete compilation of the latest research and results in the field.

The Tenth International Histocompatibility Workshop of this work, and Fran Berman for her help in preparing component concerning T-cell recognition of HLA class the report. MaryAnn Barletta, Sally Krell, and Halina II molecules drew its strength from the hard work, Korsun provided invaluable help with a multitude of diligence, and selfless spirit of the 23 participating organizational and operational issues. Bo Dupont and laboratories. The enthusiasm and camaraderie exhib- Bob Knowles provided sound advice, helpful discus- ited by the participants in Princeton during November sions, and continued support. John Hansen, Jean Marc 1987 bear testimony to the caliber of the individuals Lalouel, and the other members ofthe Organizing Com- involved. mittee made valuable contributions. Rosemarie Pliitke's Numerous individuals, both inside and outside of the enthusiasm, diligence, and statistical expertise were Organizing Committee, contributed significantly to the vital ingredients in this undertaking. John Klein was success of this component of the Workshop. We thank always ready to step in and assume whatever responsibil- David Eckels, Adrianna Zeevi, Nancy Reinsmoen, and ity was necessary to keep the work going. Above all, I Eric Mickelson for their continued advice, encourage- owe special and personal thanks to my family, whose ment, and hard work throughout this endeavor. We thank patience, support, and understanding helped to sustain Deborah Richardson for her help during the early stages me over the last 2 years.