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FV replication in uninfected or FV-infected macaque fibroblasts measured by ISH. Dark silver grains indicate an FV RNA-specific signal in rhesus macaque immortalized TF fibroblast cells either infected with FV (FV+) (A and B) or uninfected (Un) (C). (A) Sense gag probe (s-gag); (B and C) antisense gag probe (as-gag). Cells were counterstained with hematoxylin and eosin.
