library_construction_protocol: For each sample, we extracted RNA using phenol chloroform phase separation. We first added 500 µl of TRIzol (Thermo Fisher Scientific) to the frozen specimens and crushed them with a pestle. We then added 100 µl of chloroform to the crushed specimens, agitated the samples for 15 seconds, and incubated them at room temperature for 3 minutes. The samples were centrifuged at 12,000 RCF for 15 minutes at 4°C. We transferred the aqueous phase into fresh tubes, added an additional 250 µl of isopropanol, and inverted the tube four times to ensure mixing. After allowing the tubes to incubate at room temperature for 10 minutes, the samples were centrifuged at 12,000 RCF for 10 minutes at 4°