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. 2015 Jul 24;10(7):e0134035. doi: 10.1371/journal.pone.0134035

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© 2015 Gao et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 4 — Results are presented as mean ± SD. Apoptosis (AC-3) levels were graded according to intensity and quantity: 0 = no apoptosis; 1 = few apoptotic cells with low staining intensity; 2 = apoptotic cells and medium staining intensity; and 3 = many apoptotic cells and high staining intensity.*Significantly higher than bFGF treatment and VEGF treatment (P <0.05). **Significantly lower than bFGF treatment and VEGF treatment (P<0.05).