Assertion: sperm whale's spermaceti oil | /r/CapableOf | become solid
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Source sentences:
text: Lehninger Principles of Biochemistry Third Edition (by Nelson & Cox, Worth Publishers, NY 2000) says (p 367) that the spermaceti oil, a mixture of triacylglycerols and waxes containing an abundance of unsaturated fatty acids, is liquid at the normal resting body temperature of te whale, 37C, but begins to crystallise at around 31C and becomes solid at several degrees lower than that.