Cactus needles | JAMA Internal Medicine | JAMA Network
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April 26, 2004

Cactus needles

Arch Intern Med. 2004;164(8):819. doi:10.1001/archinte.164.8.819

Photographer: Stanley Martin Cohen, MD, Chicago, Ill. Close-up photograph of cactus needles, Saguaro National Park, Arizona.

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