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. 2011 Sep 22;52(10):7392–7399. doi: 10.1167/iovs.11-7601

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Figure 5. — Cytotoxicity PMMA discs and their hydroxyapatite coatings. Live (A) and dead (B) dead cell counts. Data are means ± SD. n = 3 in each group. Note the difference in y-axis scales. (A, asterisks) Significantly less cell viability in unmodified PMMA than NaOH and PDA-MUA treatments on day 4 and significantly less live cell counts in PMMA compared with all HAp-treated discs on day 7. (B, asterisks) Higher dead cell counts on PMMA coatings compared with all HAp-treated coatings on days 4 and 7. P-values are provided in the text.