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. 2015 Apr 13;10(4):e0123643. doi: 10.1371/journal.pone.0123643

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© 2015 Helmbrecht et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 1 — (A-C) Gross locomotion and exploratory behavior of Sema3F animals is analyzed at the age of 4 weeks in the dark open field. No significant differences are evident in (A) the total distance travelled (14100 ± 1069 cm vs. 13920 ± 1457 cm, p = 0.48), (B) the locomotion velocity (12.90 ± 1.07 cm/s vs. 12.61 ± 1.29 cm/s, p = 0.65) or (C) the number of rearings (95.60 ± 7.99 vs. 78.40 ± 12.40, p = 0.35). Statistical analysis: N = 10 for each group, Mann-Whitney test. * p < 0.05, ** p < 0.005, *** p < 0.001. (D-I) Anxiety related behavior is investigated in the light open field at 4 weeks of age. Overall locomotion or exploratory behavior is not affected in Sema3F mutants in the light open field as determined by (D) the total distance travelled (9505 ± 658.7 cm, N = 21 vs. 9543 ± 809.3 cm, N = 26, p = 0.86), (E) the locomotion velocity (8.586 ± 0.595 cm/s, N = 21 vs. 8.465 ± 0.725, N = 26, p = 0.72) or (F) the number of rearings (60.52 ± 5.57, N = 21, vs. 48.89 ± 6.06, N = 19, p = 0.17). The determination of (G) the distance travelled in the center (1759 ± 172.1 cm, N = 21 vs. 1796 ± 215.8 cm, N = 26, p = 0.66), (H) the time until the first center entry (74.86 ± 19.07 s, N = 21 vs. 106.8 ± 17.59 s, N = 26, p = 0.10) and (I) the number of center visits (69.10 ± 6.09, N = 21 vs. 78.00 ± 9.91, N = 26, p = 0.47) does not reveal any anxiety related behavior in Sema3F mutants. (J-L) Gait of Sema3F animals was analyzed 9 weeks after birth using the CatWalk analysis system. No significant differences were found in (J) the forelimb base of support (14.64 ± 0.73 mm, N = 9 vs. 14.37 ± 0.32 mm, N = 9; p = 1.0), (K) the duty cycle of the forelimbs (59.88 ± 1.43%, N = 9 vs. 57.42 ± 0.86%, N = 9; p = 0.11) or (L) the step pattern of the animals (5.11 ± 0.23, N = 9 vs. 5.07 ± 0.09, N = 9; p = 0.58).Statistical analysis: Mann-Whitney test. * p < 0.05, ** p < 0.005, *** p < 0.001.