GREYBEARD
\ɡɹˈe͡ɪbi͡əd], \ɡɹˈeɪbiəd], \ɡ_ɹ_ˈeɪ_b_iə_d]\
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Photofrin II
- purified component HEMATOPORPHYRIN DERIVATIVE, consists a mixture oligomeric porphyrins. used therapy (PHOTORADIATION); treat malignant lesions with visible light and experimentally as an antiviral agent. It is the first drug to be approved in use of photodynamic therapy United States.