| 1. | There is much more phosphotungstic acid in the solution than hematein.
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| 2. | Phosphotungstic acid negative stained sample viewed with transmission electron microscopy technique.
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| 3. | Phosphotungstic acid is less sensitive to reduction than phosphomolybdic acid.
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| 4. | Phosphotungstic acid is electron dense, opaque for electrons.
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| 5. | Phosphotungstic acid solutions decompose as the pH is increased.
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| 6. | The role of phosphotungstic acid and the mechanism of staining is not fully understood.
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| 7. | The phosphotungstic acid binds all of the available hematein to form a blue lake pigment.
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| 8. | Phosphotungstic acid is the strongest of heteropolyacids.
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| 9. | Phosphotungstic acid forms a lake with haematin.
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| 10. | The rest of the phosphotungstic acid stains the red-brown components, such as collagen.
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