title: More on epistasis.
authors.forename: P D
authors.initials: PD
authors.lastname: Griffiths
mesh_terms: D004843:Epistasis, Genetic; D016679:Genome, Viral; D006678:HIV / Q000235:genetics; D006801:Humans; D008957:Models, Genetic; D014721:Vesicular stomatitis Indiana virus / Q000235:genetics