article 72 Photosensitizing Agents 66 photosensitizing agent 60 priority journal 50 Animals 44 controlled study 42 Mice 36 Porphyrins 36 mouse 36 nonhuman 36 unclassified drug 36 Aminolevulinic Acid 34 photodynamic therapy 34 aminolevulinic acid 32 Photochemotherapy 30 porphyrin 30 chemistry 26 Photodynamic therapy 24 animal cell 24 animal experiment 22 Male 20 animal 20 animal model 20 animal tissue 20 male 20 human 18 metabolism 18 Humans 16 Liposomes 16 PDT 16