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Serology reagents intended to corroborate (i.e., confirm) the results of a previous test to detect human T-cell lymphotropic virus (also called human T-cell leukemia/lymphoma virus) type II (HTLV-II) antibodies. HTLV-II retrovirus is a tumor-producing RNA virus of the subfamily Oncovirinae that may cause leukemia and other hematological diseases. Confirmatory assays frequently use a different approach or a more specific methodology than the original test; they typically cost more and/or require more sophisticated devices or greater skills. Tests using these reagents are not widely utilized; these reagents may have questionable clinical usefulness, and easier or less expensive tests may be available.
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