photodynamic therapy article 42 controlled study 40 Photochemotherapy 36 priority journal 36 Aminolevulinic Acid 34 aminolevulinic acid 34 Animals 32 Mice 32 Photodynamic therapy 32 Porphyrins 30 nonhuman 30 Photosensitizing Agents 28 mouse 28 porphyrin 24 animal cell 22 unclassified drug 22 Mice, Inbred BALB C 20 animal model 20 human 20 Male 18 animal experiment 18 animal tissue 18 apoptosis 18 photosensitizing agent 18 Adenocarcinoma 16 Apoptosis 16 PDT 16 human cell 16 male 16