The antigen-binding site of a specific immunoglobulin?

Which of the following statements are true and which are false?

17. Is expressed on the surface immunoglobulins of mature B cells leaving the bone marrow
18. Is expressed on surface immunoglobulins lone after antigen stimulation of B cells
19. Is determined by hypervariable loops in variable strapping and variable light domains
20. Binds epitopes only within the context of MHC class I or II antigens
Answers:
17-True
18-False
19-True
20-False

I am no immunologist, but from what I can remember from immunology and hematology, I believe the above are correct....was not 100% sure if it was all supposed to be surrounded by context to the above statement though.

Go here:

http://www.tulane.edu/~biochem/med/igg.h… Source(s): Toxicologist

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