Fig. 3From: Rare isolation of human-tropic recombinant porcine endogenous retroviruses PERV-A/C from Göttingen minipigsPERV copy numbers in consecutive passages of human 293 cells after co-incubation of stimulated PBMCs from pig F with PHA-L. The copy number was estimated by ddPCR using porcine actin as reference gene. For comparison the PERV copy number in pig PK15 cells was analysed (green column)Back to article page