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Therapeutic response to cyanocobalamin may decrease due to elderly age, infection, renal insufficiency, diabetes mellitus, marrow suppressants use (e.g

Specifically, 5-amino-1MQ and 7-amino-1MQ exhibited high passive and active transport across membrane, with no detectable efflux observed in the Caco-2 cell assay

[2] Exposure to nitrous oxide (including recreational use) can cause functional B12 deficiency and worsen neurological manifestations

Wear PPE including gloves, lab coat, and protective eyewear Handle compounds within approved laboratory workspaces Avoid inhalation, ingestion, or direct contact Dispose of materials according to institutional chemical waste procedures Maintain proper labeling and documentation for stored research compounds These practices support safe and controlled laboratory operation