HIV is a complex animal virus
AIDS
The animal virus HIV infects certain key cells of the immune system, destroying the ability of the body to defend itself from cancer and disease.
The HIV infection cycle is typically a lytic cycle, in which the HIV RNA first directs the production of a corresponding DNA, and this DNA then directs the production of progeny virus particles. The Future of HIV Treatment.
Combination therapies and chemokines offer promising avenues of AIDS therapy.
What is Viroids?
=>
Viroids are tiny, naked molecules of RNA, only a few hundred nucleotides long, that are important infectious disease agents in plants. A recent viroid outbreak killed over ten million coconut palms in the Philippines. It is not clear how viroids cause disease. One clue is that viroid nucleotide sequences resemble the sequences of introns within ribosomal RNA genes. These sequences are capable of catalyzing excision from DNA—perhaps the viroids are catalyzing the destruction of chromosomal integrity.
