| 1. | In marinades its power to soften the protein fibre is used.
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| 2. | Animal protein fibres include wool and silk.
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| 3. | So light bouncing around off structural, protein fibres and a few melanosomes gives eyes a blue colour.
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| 4. | Clothes moths are attracted to protein fibres, and so are especially drawn to silk, wool, and feathers.
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