fig1
From: Perspectives of nano-carrier drug delivery systems to overcome cancer drug resistance in the clinics
![Perspectives of nano-carrier drug delivery systems to overcome cancer drug resistance in the clinics](https://image.oaes.cc/ca7d21e9-ecf9-4748-aa88-c5c0536aa4f7/3786.fig.1.jpg)
Figure 1. Different mechanisms of cancer drug resistance. A: elevated drug efflux, B: change in the cell metabolism, C: genetic modifications of the drug target, D: enhanced DNA damage response, E: inhibition of apoptosis