*2.6. Data Analysis*

LipidSearch v4.0 (Thermo Fisher Scientific, Massachusetts, MA, USA) was used for peak recognition, peak extraction, and lipid identification. Lipids were identified by matching to a database based on the retention time, characteristic parent ions (with an *m/z* tolerance of 5 ppm) and product ions (with an *m/z* tolerance of 8 ppm). Lipid filtration was performed using peak area and m-score thresholds of <1e5 and <10, respectively.
