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Science 18 June 1982:
Vol. 216. no. 4552, pp. 1327 - 1329
DOI: 10.1126/science.7079766
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Articles
Science, Vol 216, Issue 4552, 1327-1329
Copyright © 1982 by American Association for the Advancement of Science
A brain heater in the swordfish
FG Carey
The brain and eye of swordfish are warmer than the water. Associated with one of the eye muscles is a tissue that heats the brain. This brain heater is rich in mitochondria and cytochrome c and is supplied with blood through a vascular heat exchanger. It protects the central nervous system from rapid cooling during daily vertical excursions which may take the swordfish through a wide temperature range.
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