Fig. 1

Vaccination procedure. a Vaccination schedule. Dogs received a l-CHOP 27-weeks protocol and vaccine was administered at week 4, 6 (Ad, triangles), 10, 12 and 14 (DNA–EGT, arrows). b Vet-ePorator™ device. Electroporation data are visualized in real time during pulse delivery. c DNA injection procedure. Tibialis cranialis muscle is injected with DNA, followed by electrodes insertion and application of electric field