%0 Journal Article %T Recent Progress in Upconversion Photodynamic Therapy %A Guanying Chen %A Hailong Qiu %A Jonathan F. Lovell %A Meiling Tan %A Tymish Y. Ohulchanskyy %J Archive of "Nanomaterials". %D 2018 %R 10.3390/nano8050344 %K photodynamic therapy %K upconversion nanoparticles %K cancers %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5977358/