Photodynamic therapy (<scp>PDT</scp>) resistance by <scp>PARP</scp>1 regulation on <scp>PDT</scp>‐induced apoptosis with autophagy in head and neck cancer cells

Taken together, HP-PDT induces apoptotic cell death with autophagy in oral cancer cells. PDT resistance is related to autophagy by PARP-1 regulation in oral cancer cells.