× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
r
4
L
4
3
d
3
M
3
l
3
V
3
s
3
d
3
a
3
g
3
j
3
Home Q & A Board Biology-Related Homework Help Medicine Immunology
New Topic  
mahafakhoury mahafakhoury
wrote...
Go to Answer
Posts: 527
Rep: 0 0
6 years ago
Which is the most likely reason that HIV-infected people with heterozygous HLA loci have a delayed progression to AIDS compared with patients who are homozygous at one or more HLA loci?
 
  a. The greater number of HLA alleles provides a wider variety of HLA molecules for presenting HIV-derived peptides to CD8 T cells even if HIV mutates during the course of infection.
  b. Heterozygotes have more opportunity for interallelic conversion and can therefore express larger numbers of MHC alleles.
  c. Directional selection mechanisms favor heterozygotes and provide selective advantage to pathogen exposure.
  d. As heterozygosity increases, so does the concentration of alloantibodies in the serum, some of which cross-react with and neutralize HIV.
Read 38 times
1 Reply
Replies
Answer verified by a subject expert
Flamebrain920Flamebrain920
wrote...
#1
Posts: 417
Rep: 8 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

mahafakhoury Author
wrote...

6 years ago
Just got PERFECT on my quiz
loki1345
wrote...

Yesterday
Thanks
ediblefruitz
wrote...

2 hours ago
Smart ... Thanks!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1572 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 307
  
 165
  
 385
Your Opinion
What's your favorite funny biology word?
Votes: 401
Previous poll results: Who will win the 2024 president election?