CADM1 and tropical spastic paraparesis: PBMCs from healthy volunteers; ACs; and patients with smoldering-, chronic-, acute-type ATL, and HAM/TSP (HTLV-1-associated myelopathy/tropical spastic paraparesis) were analyzed with flow cytometry, using PpIX and TSLC1/CADM1 (tumor suppressor in lung cancer 1/cell adhesion molecule 1) parameters.