This collection explores state-of-the-art methods and protocols for research on photodynamic therapy (PDT) and its use in a wide range of medical applications, from antiviral to anticancer. Beginning with an extensive section on in vitro and in vivo models, the volume continues with chapters on oxygen-independent photosensitizers, next-generation photosensitization strategies, contemporary insights into the immunomodulatory effects of PDT, antimicrobial effects of PDT, as well as a variety of general biochemical and molecular biological techniques. Written for the highly successful Methods in Molecular Biology series, chapters include the kind of detailed implementation advice that ensures successful results in the lab.