(A through D) Detection by RT-PCR of the expression of cell-homologous genes of HHV-8 in 2 cases of reactive lymphadenopathy (lanes 1 and 2), in 1 case of localized CD of HV type (lane 3), in 1 case of multicentric CD of PC type (lane 4), and in 1 PEL cell line (HBL-6). NC, Raji cell line DNA. Negative controls included RT-PCR performed on RNA in the absence of reverse transcription reaction (−). nt, nucleotides; phiX174 HaeIII digested as molecular marker.