Fig. 3

Cold exposure promotes POAT browning. A Gene expression levels of Dpt and HOXC9 in cold-exposed and control groups of female rats (n = 6). B Ultrastructural changes in POAT, assessed by TEM. Control group: (I and II). Cold exposure group: (III and IV). C Gene expression levels of UCP1, PGC1α, Fndc5, and PRDM16 in cold-exposed and control groups of female rats (n = 6). Values are presented as the mean ± standard error. ^∗P < 0.05 and ^∗∗P < 0.01