In article <Pine.LNX.3.95.971121084302.383A-100000 at fisis3.cc.fc.ul.pt>,
Joao Miguel N. Batista <df20728 at fisis3.cc.fc.ul.pt> wrote:
>> a) Does the infected helper T cell produce virus peptides after
> its entry?
Yes.
> b) Why the helper T cells do not express class I MHCs on their
> surface like so many other body cells? By the way, do cytotoxic
> T cells express them?
Th cells do express MHC class I, as do CTL. And infected Th cells are
killed by CTL.
>2- I understand there are two classes of HIV virus identified, namely
> HIV-1 and HIV-2. What are the differences between them?
An oversimplified answer is that HIV-2 is more closely related to SIV, and
infects humans less readily and is less virulent when it does infect
humans.
>possible, I prefer that you mail me your opinions/answers.
Posted and mailed.
--
Ian York (iayork at panix.com) <http://www.panix.com/~iayork/>
"-but as he was a York, I am rather inclined to suppose him a
very respectable Man." -Jane Austen, The History of England
