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. 1969 Mar 7;163(3871):1073-5.
doi: 10.1126/science.163.3871.1073.

Freezing resistance in some Antarctic fishes

A L DeVries, D E Wohlschlag

Freezing resistance in some Antarctic fishes

A L DeVries et al. Science. .

Abstract

Measurements of serum freezing points in three Antarctic marine fishes indicated that they do not freeze in the -1.87 degrees C seawater because their blood is isosmotic to seawater. Concentrations of sodium chloride, urea, and free amino acids in the serum accounted for only half of the freezing-point depression of the serum. A protein containing carbohydrate was isolated which accounted for 30 percent of the freezing-point depression of the serum.

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