Harold E. Varmus is an American Nobel Prize-winning biologist recognized for his significant contributions to cancer research. Varmus, who was born on December 18, 1939, has played a crucial role in understanding how viruses can lead to cancer. His work on the genetic basis of cancer has influenced the field profoundly. He co-discovered the mechanisms by which certain genes can be activated by retroviruses, paving the way for advances in cancer treatment and prevention....