皮尺静脉，成年鸵鸟
Cutaneous ulnar vein of an adult ostrich. This vein (indicated by the white arrow) enlarges in adult birds and is readily identified in this image. In adult ostriches, the cutaneous ulnar vein can be accessed for blood collection and placement of an intravenous catheter.
Courtesy of Dr. Karen Hicks-Alldredge.
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