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. Author manuscript; available in PMC: 2011 Oct 6.
Published in final edited form as: Exp Dermatol. 2011 Jan;20(1):58–63. doi: 10.1111/j.1600-0625.2010.01190.x

Figure 1.

Figure 1

Oxygen tension differentially affects the rates of migration of keratinocytes isolated from young and old skin. (a–c) Representative samples of phase contrast images of scratch assays on day 0 (a), day 1 (b), and day 2 (c) after scratching to demonstrate how scratch widths were measured. (d) Graph depicting mean migration rates from keratinocytes isolated from old and young skin cultured in 4% O2 or 21% O2 conditions (n = 5 young skin samples and 5 old skin samples). Mean ± SEM (n = 30 cultures for each condition). *P < 0.001, ** P < 0.01.