antigénicos

Antigênicos refers to substances that have the potential to elicit an immune response. These substances, known as antigens, are typically molecules that are recognized as foreign by the body's immune system. This recognition triggers a complex series of events, including the activation of lymphocytes and the production of antibodies. Antigens can be found on the surface of pathogens like bacteria and viruses, or they can be foreign proteins introduced into the body, such as those in transplanted organs or certain allergens. The immune system's ability to distinguish between self and non-self is crucial, and antigens play a central role in this process. When the immune system encounters an antigen, it can mount an immune response to neutralize or eliminate the perceived threat. This fundamental principle underlies many medical interventions, including vaccination, where weakened or inactive forms of antigens are used to prime the immune system for future encounters with the actual pathogen. Understanding antigênicos is therefore vital for comprehending immunology, vaccinology, and the mechanisms of immune defense and hypersensitivity.