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. 2013 Dec 2;8(12):e81779. doi: 10.1371/journal.pone.0081779

Figure 4. Spatial learning and memory.

Figure 4

The means of escape latency on days 11-15 (A) and 26-30 (B) after acute CO poisoning. Swimming time spent in quarter 4 on days 15 and 30 after acute CO poisoning (C). The values are the mean ± SD (n = 3 or 4). * comparison of the swimming times spent in quarter 4 by the CO or O2 group with those by the NC group (* indicates P < 0.05). # comparison of the swimming times spent in quarter 4 by the HOS group with those by the CO group (# indicates P < 0.05). $ comparison of the swimming times spent in quarter 4 by the HOS group with those by the O2 group ($ indicates P < 0.05).