A PIXE METHOD TO STUDY BIOLOGY AT THE DNA LEVEL

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An external proton beam system with a detection sensitivity of 10 g for ruthenium was used to study DNA. A metal- organic compound tris (4,7- diphenylphenanthroline) ruthenium (Ⅱ) [Ru(DiP)32-] was chosen as a metal marker. The target DNA labeled with Ru (
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