Accordingly, the three images (from left to right) in Fig. 6A show the morphology of the cancer cells after 24-hour treatment by (i) the free drug (with no particle carrier), (ii) drug-HER-2-GMO-MENs with no field applied, and (iii) drug-GMO-MENs in a 30-Oe d.c. field. This evidence concerns the gene ERBB2 and cancer.