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Line charts illustrating the differences in the phosphorylation of Akt (a), ERK (b) and mTOR (c) molecules between the aged and control over 120 min. The data is shown as mean with SD. Significance is set at P < 0.05. Significance was indicted versus 0 min (*) and versus corresponding time-point (**). The experiment consisted of 3 repeats all in duplicate
