2.9 nanogram a nanogram

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9.6 nanogram a nanogram 6.9 nanogram a nanogram 3.5 nanogram a nanogram 3.1 nanogram a nanogram 6.2 nanogram a nanogram 5.4 nanogram a nanogram 8.2 nanogram a nanogram 1.9 nanogram a nanogram 7 nanogram a nanogram 10 nanogram a nanogram

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