Human T Cell Clones: A New Approach to Immune Regulation

Most complex biological systems, such as enzyme pathways, are effec­ tively controlled near the beginning of the process. There is increasing evidence that the same is true for the immune system, with the initial interactions between antigen, antigen-presenting cells, and T cells hav­ ing a paramount influence on the ensuing events. Thus, analysis of the early stages of the immune responses has been a preoccupation of many immunologists. This has been considerably aided by the capacity to e...