Which of the following best describes why there is currently no vaccine for HIV?

+1 vote

 

  

HIV contains no antigenic proteins in its envelope.

  

HIV evolves very rapidly.

  

HIV is a retrovirus.

  

Not enough researchers are studying HIV.

 

asked Dec 29, 2012 in Biology by anonymous
    

1 Answer

0 votes

 

HIV evolves very rapidly.

 

answered Dec 29, 2012 by anonymous



...