Fig. 4.
Detection of HVMNE in the cell lines J94356PBMC and J94356SKIN by electron microscopy and DNA PCR. (A) EM of cell line J94356PBMCharvested 48 hours after induction with Na-butyrate (1 μmol/L). Extensive EM search in the same cell line without Na-butyrate induction failed to show viral particles (not shown). (B) Southern blot of PCR products using probe 536. Detection of a 536-bp DNA fragment in the J94356PBMC and J94356SKIN cell lines at 46 days in culture and after 226 days in culture in line J94356SKINby PCR using the generic primer pair DFASA/GDTD1B (described by Rose et al33).