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. 2011 Mar 9;6(3):e17655. doi: 10.1371/journal.pone.0017655

Figure 2. Short free-running period of locomotor activity rhythm in the KD mice.

Figure 2

A, B, Locomotor activity rhythms of the WT (A) and KD (B) mice were entrained to 12∶12 LD. But in DD, the KD mice exhibited circadian period of locomotor activity shorter than that of WTs. The vertical axis in each graph indicates the day path. Horizontal open and closed bars indicate the light and dark periods, respectively. C, The difference in the circadian period between the KD and WT mice (n = 15 each) was statistically significant **P<0.01 vs. WT (Student's t-test).