how is it diagnosed?
By using an enzyme-linked immunosorbent assay (ELISA) to detect antibodies to HIV-1.
HIV
an enzyme-linked immunosorbent assay (ELISA) to detect antibodies to HIV-1. 
what is rna interference? It is a biological process. what does it do? RNA molecules inhibit gene expression or translation, by neutralizing targeted mRNA molecules. what does rna stand for? Ribonucleic acid how has it evolved? UNANSWERABLE what relation does it have to medicine? It was observed that introducing sense and antisense RNA to par-1 mRNA in "Caenorhabditis elegans" caused degradation of the par-1 message. what relation does it have to cancer? It can provide a more specific approach to inhibit tumor growth by targeting cancer-related genes. how is this disease treated with rna? Chemotherapeutic agents and inhibit cell invasion and migration what are the variations among organisms? Its interference can be both systemic and heritable in plants and "C. elegans", although not in "Drosophila" or mammals. does rna cause viral infections? Yes, HIV, HPV, hepatitis A, hepatitis B etc how does it stimulate an immune response? It prevent the self-propagation of transposons and induces gene silencing in plants. what role does it play in insecticides? It is under development as an insecticide. what is the full form of the first viral infection that you mentioned? Human immunodeficiency viruses when was it discovered? 1981 by whom? U.S. Centers for Disease Control and Prevention what is its origins? The initial cases were a cluster of injection drug users and gay men with no known cause of impaired immunity who showed symptoms. how is it classified? It is a member of the genus "Lentivirus", part of the family "Retroviridae".
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HIV [SEP] Diagnosis
Specimens that are repeatedly ELISA-reactive occasionally provide an indeterminate western blot result, which may be either an incomplete antibody response to HIV in an infected person or nonspecific reactions in an uninfected person. Although IFA can be used to confirm infection in these ambiguous cases, this assay is not widely used. In general, a second specimen should be collected more than a month later and retested for persons with indeterminate western blot results. Although much less commonly available, nucleic acid testing (e.g., viral RNA or proviral DNA amplification method) can also help diagnosis in certain situations. In addition, a few tested specimens might provide inconclusive results because of a low quantity specimen.