Figure 8
From: Functional verification of the diphtheria toxin A gene in a recombinant system
Transfection of 293T cells with pEGFP-N1 vector (A) and pEGFP-N1-DTA vector (B) at six days post-transfection. Few cells emitting green light were observed in the group transfected with pEGFP-N1-DTA, whereas many were seen in the control group; the cell density in the second group was less than that in the first group; A1 and B1, images taken under white light; A2 and B2, images taken under UV light; A3 and B3, merged pictures. Magnification, 200×.