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Vitamin B12 plays a critical role in producing red blood cells, supporting nerve health, and maintaining DNA integrity
Tariff rates on research chemicals imported from China vary by classification and current trade policy
Funding This work was supported by grants from the National Natural Science Foundation (81972259, 82273394), the Clinical Trials Fund from Nanjing Drum Tower Hospital and the Affiliated Hospital of Nanjing University Medical School (2024-LCYJ-PY-01), Suzhou Municipal Health Commission (SKYD2022034), and the discipline construction and support project (XKTJ-JD202006) of the Second Affiliated Hospital of Soochow University
Research duration varies by study objectives, with metabolic research often requiring extended timelines to observe meaningful outcomes
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