Publisher Summary This chapter addresses some aspects of the gene expression strategies
and viral structure of retroviruses and pararetroviruses, highlighting the common nature of
the problems faced and discussing the solutions adopted by specific viruses and virus
groups. It concentrates on only a few areas in which recent results have allowed interesting
comparisons to be drawn between the virus groups. Such comparisons are useful not only in
suggesting parallel and complementary lines of research but also in helping to clarify the …