ERVW-1 and T-cell large granular lymphocyte leukemia: Accordingly, we tested volunteer blood donors (VBD), LGLL patients and HTLV-1 or HTLV-2 infected individuals, some of whom had myelopathy, for antibodies to a peptide in HERV-K10 Pol that was homologous to the HTLV-1 gp21 Env peptide.