Another retroviral disease of humans seems to be hepatitus B. I got this
from www.britannica.com and looking for retroviruses. There is also at
the moment a story on the changing of avian leukosis virus (ALV-J) that
seems a relevant parallel to the variations in HIV strains and their
virulence.
Sorry that I'm not up on the technique that would allow you to click on
the web address and go directly there.
Dave
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