× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
3
y
2
s
2
a
1
w
1
w
1
i
1
m
1
s
1
c
1
k
1
1
Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
New Topic  
AidenSmith AidenSmith
wrote...
Go to Answer
Posts: 269
Rep: 0 0
6 years ago
Patients with an X-linked inherited disease called Hyper IgM (XHIGM) syndrome have a deficiency CD40 ligand, a protein found on the surface of T lymphocytes. Patients with XHIGM are unable to make the class switch between IgM and either IgA or IgG. From this information you could conclude that

a. B-cell production of IgM does not depend on the CD40 ligand.
b. the class switch between IgM and either IgA or IgG requires T cells.
c. the switch between membrane-bounded IgM and secreted IgM requires T cells.
d. Both a and b are correct.
e. Both b and c are correct.
f. all of the above
Read 66 times
1 Reply
Replies
Answer verified by a subject expert
igotubabeigotubabe
wrote...
#1
Posts: 190
Rep: 2 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

AidenSmith Author
wrote...

6 years ago
Helped a lot
hmonier
wrote...

Yesterday
This site is awesome
Tabitha.davis
wrote...

2 hours ago
Good timing, thanks!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1041 People Browsing
 155 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 270
  
 1615
  
 261
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 436
Previous poll results: Which country would you like to visit for its food?