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FDA guidance for RUO-labeled in vitro diagnostic products explains that RUO labeling is meant to identify materials in a laboratory research phase and distinguish them from diagnostic contexts [16]

B12 supplements are convenient and easy to take daily, making them a good option for maintaining steady levels

50 ml (1.7 fl oz) Suggested Adult Use: 2 pumps by mouth, 2 times daily, or as directed by a health professional

The gentle wall-flow method dissolves the powder without agitation

Mice were allowed free access to drinking water and standard mouse chow and were housed in constant temperature, humidity, and 12 h light-dark cycling