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chalaza
The chalaza (; from Greek "hailstone"; plural ''chalazas'' or ''chalazae'') is a structure inside bird and reptile eggs and plant ovules. It attaches or suspends the yolk or nucellus within the larger structure.
==In animals==
In the eggs of most birds and reptiles, the chalazae are two spiral bands of tissue that suspend the yolk in the center of the white (the albumen). The function of the chalazae is to hold the yolk in place. For culinary use of eggs, particularly in baking, the chalazae are sometimes removed in order to ensure a uniform texture.
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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