| 21. | Titanium dioxide pigment is the single greatest use of titanium worldwide.
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| 22. | This yields a yellow green product sometimes used as a pigment.
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| 23. | The following examples illustrate the shifting nature of historic pigment names:
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| 24. | The cast terracotta figure bears traces of its original white pigment.
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| 25. | The red pigment vermilion is mostly obtained by reduction from cinnabar.
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| 26. | Intestinal anaerobic bacteria transform haemoglobin into sulfhemoglobin and other colored pigments.
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| 27. | The rhodopsin pigment must be regenerated for further phototransduction to occur.
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| 28. | It produces mostly titanium dioxide pigments and nitrogen and phosphorus fertilizers.
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| 29. | The three receptors are dominated by three rhodopsin-like pigments.
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| 30. | The pigment is still made today by essentially the same process.
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