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. Author manuscript; available in PMC: 2010 Apr 15.
Published in final edited form as: Free Radic Biol Med. 2009 Feb 12;46(8):1004–1013. doi: 10.1016/j.freeradbiomed.2009.02.003

Figure 3.

Figure 3

Equations noting the photo-induced formation of the Methylene blue (MB) excited singlet species which can either decay back to ground state MB or form the excited triplet state of MB which will react with ground state oxygen to form singlet oxygen.