Based on his findings, Herzig believes that brown fat may originate from a mother cell of adipose tissue that by default tends to make white fat.

根据他的调查结果，赫齐格认为，棕色脂肪可能源自脂肪组织母细胞，默认情况下产生白色脂肪。

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“Brown fat is one of the body’s natural defenses against obesity, ” said cell biologist Bruce Spiegelman of Harvard Medical School, who co-authored the paper published Wednesday in Nature.

“灰色脂肪是一种人类抵御肥胖的一种天然保护，”哈佛医学院的细胞生物学家Bruce Spiegelman说，他也是周四发表在Nature上的那篇文章的作者之一。

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kajimura-ebat-11The fat is brown because it contains extra blood vessels and mitochondria, the energy factories of the cell.

这种脂肪细胞因为有更多的血管和具有细胞能量工厂之称的线粒体，所以看起来是灰色的。

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