biology - 5e - immune evasion Flashcards
1
Q
What have parasites evolved ways of?
A
Evading the immune system.
2
Q
What do endoparasites do?
A
They mimic host antigens to evade detection and modify host immune response to reduce their chances of destruction.
3
Q
(Endoparasites) What does antigenic variation in some parasites allow them to do?
A
To change between different antigens during the course of infection of a host.
It may also allow re-infection of the same host with the new variant.
4
Q
How do some viruses escape immune surveillance?
A
By integrating their genome into host genomes, existing in an inactive state known as latency.
5
Q
When does the virus become active again?
A
When favourable conditions arise.
