You should contact your GP if: You have been found to have elevated B12 levels on blood tests, particularly if levels exceed 1000 ng/L (approximately 740 pmol/L, though laboratory reference ranges vary) and you are not taking high-dose supplements You develop new symptoms after starting B12 supplementation, including persistent skin rashes, significant gastrointestinal disturbance, or unexplained symptoms You have underlying liver disease, kidney problems, or blood disorders and are considering B12 supplementation You are taking B12 supplements without medical supervision and have not had your levels checked, particularly if taking doses exceeding 2000 micrograms daily You experience symptoms that might indicate underlying disease, such as unexplained weight loss, persistent fatigue, jaundice, or abdominal swelling Call 999 or go to A&E if you develop severe allergic reactions following B12 injections, including difficulty breathing, facial swelling, or widespread rash, as these may indicate anaphylaxis, though this is extremely rare
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Metabolic crosstalk between CAFs, inflammatory cells and tumor cells CAFs in PDAC engage in metabolic crosstalk with both tumor and inflammatory cells, secreting alanine via autophagydriven proteolysis that is taken up by cancer cells and converted into TCA intermediates to sustain bioenergetics under nutrient stress
For proliferation analysis, BrdU was added to the medium 12 h before harvesting the cells
