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. 2008 Oct 14;3(10):e3399. doi: 10.1371/journal.pone.0003399

Figure 7. Average RF-sizes of young and old rats.

Figure 7

(A) Average RF-sizes of the fore- and hindpaw of young (black) and aged (red) animals are shown. Error bars indicate SEM. * p<0.01, ** p<0.001. (B) Normalized age-related RF-enlargement. The increase of RF-size was 22% for the forepaw and 190% for the hindpaw. Although we found that RFs were enlarged on both the fore- and the hindpaw of old animals, the effects of aging on the RF-size was substantially stronger on the hindpaw than on the forepaw. (C) Mean values (±SEM) of RF-length. ** p<0.001. RF-lengths was only measured for hindpaw RFs of young (black) and old (red) rats. Analogous to the RF-size determined by handplotting we found a significant increase of RF-lengths for the old animals.