CD8A and tropical spastic paraparesis: 78 Yamano Yamano Y Y Nagai Nagai M M Brennan Brennan M M Mora Mora CA CA Soldan Soldan SS SS Tomaru Tomaru U U Correlation of human T-cell lymphotropic virus type 1 (HTLV-1) mRNA with proviral DNA load, virus-specific CD8+ T cells, and disease severity in HTLV-1-associated myelopathy (HAM/TSP).