WAT UCP1 expression was evaluated using anti-UCP1 antibody (1:500; ref. ab10983; Abcam, Cambridge, UK) as previously reported [23 (link),29 (link),30 (link)]. Hepatic lipid content was investigated through oil red O staining, as previously shown [17 (link),24 (link),28 (link),31 (link),32 (link),33 (link)]. The pictures were obtained using a digital camera Olympus XC50 (Olympus Corporation; Tokyo, Japan) at 20×. Digital liver and WAT obtained images were analyzed with ImageJ Software (National Institutes of Health; Bethesda, MD, USA). GFP fluorescence was observed after perfusion of the animals and detected with a fluorescence microscope Olympus IX51 [4 (link),17 (link),23 (link),24 (link),25 (link),26 (link),27 (link),30 (link)].
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