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・ Endotransglucosylase


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Endotherm : ウィキペディア英語版
Endotherm

An endotherm (Greek: ''endon'' = "within", ''thermē'' = "heat") is an organism that maintains its body at a metabolically favourable temperature, largely by the use of heat set free by its internal bodily functions instead of relying almost purely on ambient heat. Such internally generated heat is mainly an incidental product of the animal's routine metabolism, but under conditions of excessive cold or low activity an endotherm might apply special mechanisms adapted specifically to heat production. Examples include special-function muscular exertion such as shivering, and uncoupled oxidative metabolism such as within brown adipose tissue.
Mammals and birds are the only extant universally endothermic groups of animals. Certain lamnid sharks, tuna and billfishes are also endothermic.
In common parlance, endotherms are characterized as "warm-blooded." The opposite of endothermy is ectothermy, although there is no absolute or clear separation between the nature of endotherms and ectotherms in general.
==Mechanisms==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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