@article{Peng_2007 author = {Qian Peng and Alcira Batlle}, title = {Preface: Special Issue of Photodynamic Therapy and Photodetection with Porphyrin Precursors for the Journal of Environmental Pathology, Toxicology, and Oncology}, journal = {Journal of Environmental Pathology, Toxicology and Oncology}, issn = {0731-8898}, year = {2007}, volume = {26}, number = {2}, }