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l-Arginine does not affect glucose uptake by BAT. We assessed mean (a) and maximal (b) cold-induced [18F]FDG uptake (expressed as SUV), BAT volume (c), total [18F]FDG uptake (SUVmax × BAT volume) (d) and [18F]FDG uptake by fixed volumes of interest (VOI) in BAT (e) in Europid and South Asian men after supplementation with placebo (white bars) or l-arginine (black bars). Data are presented as mean ± SD
