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. 2011 Sep 28;6(9):e25524. doi: 10.1371/journal.pone.0025524

Figure 5. The MMP of macrophages treated with SPIO particles was measured by fluorescent intensity of the FL-1 channel.

Figure 5

There was a leftward shift of the fluorescent intensity after the cells had ingested the SPIO particles, and this response occurred in a dose-dependent manner.