“…From 1970 to 1985, there was considerable advancement in our understanding of CTCL stimulated by developments in immunology and by the organization of the Mycosis Fungoides Cooperative Group in the United States and similar organizations in Japan, Great Britain and Europe. The progress during these fifteen years has been reviewed by Clendenning (7) and by Edelson (11). We are currently in a period of research and development in molecular biology where T-cell receptor gene rearrangement, the polymerase chain reaction, and other yet undeveloped techniques promise to further define the nature ofCTCL (12)(13)(14).…”