Human Papillomaviruses and Their Possible Role in Squamous Cell Carcinomas.- Antigen-Receptor Interactions in the Induction of B-Lymphocyte Unresponsiveness.- Structure and Assembly of Bacteriophage Lambda.- Perinatally Acquired Viral Infections.- Gene Cloning with Small Plasmids.- Integration and Excision of Bacteriophage ?.- DNA Replication -Bacteriophage Lambda.- Structure and Function of the Genome of Viruses Containing Single-Stranded RNA as Genetic Material: The Concept of Transcription and Translation Helices and the Classification of these Viruses into Six Groups.- Indexed in ISR.