Merck Manual

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Cutaneous ulnar vein, ostrich chick
Cutaneous ulnar vein, ostrich chick

    In this photograph of an ostrich chick, the cutaneous ulnar vein is barely visible. Considering the large size of the bird, even with small wings relative to the total body size, this vein is often a poor site for blood collection.

Courtesy of Dr. Karen Hicks-Alldredge.

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