1 “...In recent years rapid progress has been made in the areas of T cell and B cell biology, cell-cell...”

2 “... have been remarkable. The analysis of immunoglobulin (Ig) gene organization and Ig repertoire...”

3 “... in 1972, rapid progress has been made in understanding the basic mechanisms and genes regulating...”

4 “... few years, rapid progress has been made in understanding the molecular basis of signaling pathways...”

5 “...Impressive progress has been made in the general field of immunology which has made possible new...”