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An increasing body of evidence shows that cross-reactive antibodies can have a crucial impact but greatly varied, these cross-reactive antibodies can perform neutralization if they bind viral epitopes with higher affinity 78,79,80
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Vitamin B12 is generally found in foods of animal origin and is find in smaller levels in plant food however, some plant foods are fortified with vitamin B12, including breakfast cereals and nutritional yeasts
1,2 Serum vitamin B 12 levels may be artificially elevated in patients with alcoholism, liver disease, or cancer because of decreased hepatic clearance of transport proteins and resultant higher circulating levels of vitamin B 12
Symptoms of vitamin B12 deficiency: extreme tiredness a lack of energy pins and needles a sore and red tongue mouth ulcers muscle weakness problems with your vision psychological problems, which can range from mild depression or anxiety to confusion and dementia problems with memory, understanding and judgement Causes of a vitamin B12 deficiency: pernicious anaemia a lack of these vitamins in your diet medicine certain medicines, including anticonvulsants and proton pump inhibitors (PPIs), can affect how much of these vitamins your body absorbs
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