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Human T-cell leukaemia type-1 virus (HTLV-1), (also known as the human T lymphotropic virus type-1 virus). Human T-cell leukaemia virus type-1 (HTLV-1), a human oncoretrovirus, is the etiologic agent of adult T-cell leukaemia, and of tropical spastic paraparesis/HTLV-1 -associated myelopathy.
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