SV40_origin appears in 2 plasmids under 1 name.
SV40_origin
pKG20: Hb9::linker lenti + WPRE pKG18: Hb9::linker lenti (minus WPRE)
pKG20: Hb9::linker lenti + WPRE
pKG18: Hb9::linker lenti (minus WPRE)