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The needle creates a channel through the rubber stopper between the sterile interior and the external environment
Metabolism: B12 is vital for the metabolism of fats, protein, and carbohydrates
Experienced researchers often purchase small quantities from multiple vendors initially, submit samples for independent testing, and then scale up with the vendor that demonstrates the best quality
El-Sayed repeatedly attacked the other candidates over campaign donations, arguing he was the only candidate in the race not accepting corporate money
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