CNTN2 and tropical spastic paraparesis: RNA was isolated from cultures derived from ATLL patients (HuT-102, StEd, ATL3, PaBe, JuanaW), from HAM/TSP patients (Abgho, Eva, Nilu, Xpos) and from HTLV-1 and Tax in vitro-transformed cells (MT-2, C91-PL and Tesi, respectively).