Figure 2

(a) Numbers of up- and down-regulated genes at each time point compared to no caffeine control at 0 h. (b) Venn diagrams showing numbers of overlapping genes with different caffeine dosages up-regulated after 1 h (left) and 3 h (right). (c) Venn diagrams showing overlaps of down-regulated genes between 3 μM caffeine at 1 h vs. 3 h (left), and between 3 μM caffeine at 1 h vs. 10 μM caffeine at 3 h (right).