Levels of stored triglycerides in differentiated mature adipocytes were verified by staining intracellular lipid droplets with Oil red O (Solarbio) subjected to staining procedures as described previously (Oh et al., 2019). Images were taken using Olympus IX73 Inverted Microscope. To quantify the lipid content, Oil Red O was extracted with 100% isopropanol and calculated by the measuring absorbance at 490 nm using a SpectraMax i3x microplate reader (Molecular Devices, San Jose, CA, United States).
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