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Motor activity during 20 h after the i.n. challenge. (a) Motor activity assessed every hour (the shadow period corresponds to darkness) in healthy (H, white symbol) and asthmatic (A, black symbol) rats. Statistical differences not included. (b) Total number of movements in healthy (H, white bars) and asthmatic (A, black bars) 20 h after the challenge. Results are expressed as mean ± standard error (N = 9). Significant differences: ** p < 0.01 vs. healthy animals.
