Innate Immunity to Parasites Quiz

Molecular mimicry is when antiviral immunity causes immune responses against self antigens.

Viruses can alter their antigens through point mutations (antigenic drift) or reassortment of RNA (antigenic shift).

Class I MHC-associated presentation is important for recognition and killing of virus-infected cells by cytotoxic T lymphocytes (CTLs).

<p>Poxviruses encode molecules that bind to cytokines like IFN-γ, TNF, IL-1, IL-18, and chemokines.</p> Signup and view all the answers

<p>HIV can induce T cell unresponsiveness through PD-1 signaling, leading to immune evasion.</p> Signup and view all the answers

<p>HIV infects and either kills or inactivates immunocompetent cells.</p> Signup and view all the answers

<p>Parasitic infection refers to infection with protozoa, helminths, and ectoparasites like ticks and mites.</p> Signup and view all the answers

<p>Protozoa can develop resistance mechanisms through genetic mutations or alterations in their surface antigens.</p> Signup and view all the answers

<p>Helminthic parasites use strategies like immune modulation, antigen masking, and tissue invasion to evade host immunity.</p> Signup and view all the answers

<p>Immune responses to parasites can cause tissue damage, inflammation, and allergic reactions.</p> Signup and view all the answers