1.9 µg in petagram

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1.4 µg in petagram 1.5 µg in petagram 1.6 µg in petagram 1.7 µg in petagram 1.8 µg in petagram 1.9 µg in petagram 2 µg in petagram 2.1 µg in petagram 2.2 µg in petagram 2.3 µg in petagram

3.8 µg in petagram 0.2 µg in petagram 5.7 µg in petagram 0.6 µg in petagram 4.7 µg in petagram 2.5 µg in petagram 8.3 µg in petagram 9.1 µg in petagram 9.6 µg in petagram 8.1 µg in petagram

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