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. 2011 Jun 13;156(4):1934–1954. doi: 10.1104/pp.111.174714

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© 2011 American Society of Plant Biologists. All rights reserved.

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Figure 2. — PSII activity in response to H₂O₂ (A) and MV (B). The time course of changes in F_v/F_m of Synechococcus sp. WH7803 cells acclimated to LL (triangles) or HL (squares) was measured after the addition of 25 μm (gray symbols) or 750 μm (black symbols) H₂O₂ and 1 μm (gray symbols) or 50 μm (black symbols) MV. Control cultures without stress induction are indicated by white symbols. Broken vertical lines indicate changes of time scale on the x axis. These data are based on three to five independent experiments and are expressed as means ± sd.