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. 2011 May 31;6(5):e20532. doi: 10.1371/journal.pone.0020532

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Nude mice bearing intradermal Cal27 (A), HN6 (B), HN12 (C), and Hep2 (D) HNSCC xenografts were injected intraperitoneally with either PBS (blue lines) or PA-U2-R200A + PA-L1-I210A + LF (red lines) at the time points indicated by the red arrows. (E) Body weight change over time in all groups. The data are expressed as mean tumor weight ± standard error of the mean; *, P<0.01. Ten mice were used per tumor and treatment group.