KA 5: parasitism: immune invasion Flashcards
1
Q
parasites have…
A
evolved ways of evading the immune system
2
Q
how do endoparasites evade the immune system?
A
- mimic host antigens to evade detection
- modify host immune repsonse to reduce chances of destruction
3
Q
what does antigenic variation in some parasites allow?
A
- to change between different antigens during the course of infection of a host
- also allows 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 do viruses become active again?
A
when favourable conditions arise
