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The specific concentration, exposure time, and experimental protocols are determined by the researcher based on the study design, existing literature, and institutional guidelines
It should be noted that there are many known risks associated with vitamin B12 deficiency during pregnancy
[3] The British Society for Haematology guidelines emphasise that the response to treatment should be monitored through clinical assessment and blood count testing, rather than routine measurement of B12 levels after treatment has started
It's estimated that between 10 percent and 30 percent of people older than 50 produce too little stomach acid to release B12 from its carrier protein in foods
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