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. 2013 May 31;8(5):e64920. doi: 10.1371/journal.pone.0064920

Figure 3. Amount of biogenic amines in whole brains of bees following acute or repeated cocaine treatment.

Figure 3

A. Biogenic amine content of brains frozen two hours after being treated with sham, vehicle control, 10 µg or 20 µg cocaine. There were no significant differences between the groups (MANOVA: F6,74 = 0.2859, p = 0.9419). B. Biogenic amine content of brains treated seven times with sham, vehicle control, or 3 µg cocaine. No significant differences were seen between the groups (MANOVA: F6,72 = 0.3549, p = 0.905). C. Biogenic amine content of brains of bees frozen one hour after treatment with 0, 5, 25, 50, 100, or 200 µg of volatilised cocaine. There were no significant differences between the treatment groups (MANOVA: F15,93 = 0.9069, p = 0.5561, Fig. 3C).