Fig. 4. Expression levels of miRNAs with normalized read count frequencies in each treatment.

a all identified (including known and novel) miRNAs. b known miRNAs. c novel miRNAs. Expression level category: 0, no expression; 0–10, extra-low expression; 10–100, low expression; 100–1000, moderate expression; 1000–10,000, high expression; >10,000, extra-high expression