56.1 MB (4.3 MB compressed)
6260 x 3130 pixels
53.1 x 26.4 cm ⏐ 20.9 x 10.4 in (300dpi)
JACOPIN / BSIP / SCIENCE PHOTO LIBRARY JACOPIN / BSIP / SCIENCE PHOTO LIBRARY
Illustration of the presence of cancer molecules in sweat, which a dog's sense of smell can pick up on. The cancer tumour produces molecules that join the blood flow. Sweat glands produce sweat thanks to blood fluid. These molecules are therefore evacuated in small quantities to the surface of the skin through sweat. Dogs can smell these cancer cells.
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