If a person is exposed to a virus, which event is part of the activation phase in that person's adaptive immune response to the virus?

Question

Quizplus · Accepted Answer

During the activation phase of the adaptive immune response, T-helper cells recognize an antigen on an antigen-presenting cell and release cytokines. This leads to the activation and proliferation of B cells and T cells specific for the viral antigen. Option A refers to the phagocytosis of a virus-infected cell, which is part of the innate immune response. Option B refers to the process of antigen presentation, but it is not specifically part of the activation phase. Option C refers to the production of antibodies, which is a later stage in the adaptive immune response. Option D refers to the phagocytosis of the virus by phagocytes, also part of the innate immune response.

If a Person Is Exposed to a Virus, Which Event