Obesity research. Researcher holding two rats that are part of an obesity study. The rat on the right is normal,with a weight of 550 grams,the rat on the left is obese,with a weight of 1445 grams. Photographed at the National Institute of Arthritis and Musculoskeletal and Skin Diseases,in 1955 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / National Library of Medicine |
Bildgröße: | 3289 px × 2657 px |
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