6.9 nanogram in ng

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6.4 nanogram in ng 6.5 nanogram in ng 6.6 nanogram in ng 6.7 nanogram in ng 6.8 nanogram in ng 6.9 nanogram in ng 7 nanogram in ng 7.1 nanogram in ng 7.2 nanogram in ng 7.3 nanogram in ng 7.4 nanogram in ng

3.1 nanogram in ng 4.7 nanogram in ng 2.8 nanogram in ng 2 nanogram in ng 7 nanogram in ng 0.7 nanogram in ng 2.3 nanogram in ng 2.2 nanogram in ng 4.6 nanogram in ng 0.8 nanogram in ng

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