| 11. | The flesh is thick, firm and white and may discolour yellow when bruised.
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| 12. | With iron ( II ) sulphate solution, the flesh slowly discolours to grey.
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| 13. | It is a white to cream colour that discolours when cut, bruised or damaged.
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| 14. | Bronze is used to make bronze wool for woodworking applications where steel wool would discolour oak.
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| 15. | The eggs are round and milky blue when laid, but quickly discolour in the increasingly dirty nest.
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| 16. | One is that I heard the fumes from certain glues can discolour the porcelain of the watch face.
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| 17. | This is done to prevent growth of mould which could damage the plants and discolour the sides of the terrarium.
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| 18. | The white flesh of the entire fungus does not discolour when damaged, and is soft particularly in mature specimens.
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| 19. | Solder can be used to join the wires, but this causes the enamel to discolour and form bubbles later on.
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| 20. | In August 2003, the tower was painted an ultramarine blue to cover the existing light brown which had started to discolour.
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