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单词 brown fat
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brown fat
brown fat n. [after German braunes Fettgewebe (J. A. Hammar 1895, in Arch. f. mikroskop. Anat. 45 513)] Zoology and Physiology a specialized type of adipose tissue found esp. in hibernating mammals and the newborns of many species (including humans).Brown fat is highly cellular and vascular, with a high content of lipid and cytochromes, and is capable of generating heat through lipid oxidation.
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1902 Jrnl. Royal Microsc. Soc. 422 M. Auerbach finds that brown fat occurs in all the typical parts of the body in rats, mice, voles, hares, hedgehogs, moles, &c.
1968 R. Passmore & J. S. Robson Compan. Med. Stud. I. xxxix. 6/2 The distribution and amount of brown fat in the newborn varies among different species.
1990 Green Mag. Nov. 38/1 If there are dramatic changes in air temperature, additional brown fat stabilises the hedgehog's temperature.
2010 Wall St. Jrnl. 13 Apr. b9/2 To help adults..lose weight, scientists are looking for ways to increase brown fat, which generates heat and burns calories.
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