A key feature of the immune system is the ability to distinguish self from nonself, or foreign. This remarkable ability is necessary because our bodies are constantly exposed to pathogens, for example, viruses. The basis of its ability to distinguish between both is the presentation of antigens to immune cells. Subscribe to AMBOSS YouTube for the latest clinical examination videos, medical student interviews, study tips and tricks, and live webinars! Free 5-Day Trial: Instagram: Facebook: Twitter:
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