Fig. 4.

Correlation of virus load between peripheral blood mononuclear cells (PBMC) and bronchoalveolar lavage cells (BALC) of each infected individual. Viral loads in total cells (a) and in CD3⁺ T cells (b) were compared between PBMC and BALC of each individual. ○, HTLV-1-associated myelopathy/tropical spastic paraparesis patients; •, carriers without detectable tax/rex mRNA in either tissue; □, those with detectable tax/rex mRNA only in BALC; Δ, those in whom tax/rex mRNA was detectable in both tissues.