un virus - certains virus, comme le virus de l'immunodéficience humaine (VIH, responsable du sida), sont associés à un plus grand risque de cancer du foie, de lymphomes et de sarcomes.
viruses: Certain viruses, such as the human immunodeficiency virus (HIV, which causes AIDS) are associated with an increased risk of liver cancer, lymphomas, and sarcomas.