endogenous promoter - (Aug/21/2006 )

could any one please explain me the terminologies in inverted commas according to contex

(Although HBV replication can proceed (to various extents) from different DNA constructs, including vector-free circularized or linear genome vector-linked tandem dimer (and a DNA copy of pregenomic RNA under foreign (cytomegalovirus) promoter, we selected to pursue the tandem dimer approach. Such a DNA form allows HBV replication to proceed under the "endogenous core promoter " rather than an artificial cytomegalovirus promoter and thus permits the expression of HBeAg.)


is endogenous promoter be a part of vector(puc18) or a promoter sequence of HBV.


I will be very great full

Its the HBV promoter.