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Relative change in carbohydrate metabolism intermediates during the progression of a 30-min flight in the thorax of the bumblebee Bombus impatiens. Colors correspond to flight times (red = 0 min, orange = 5 s, yellow = 30 s, green = 2 min, light blue = 8 min, dark blue = 15 min, purple = 30 min). Columns that do not share a letter are significantly different (p < 0.05).
