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According to USDA Agricultural Research Service data based on NHANES, approximately 6% of adults aged 60 and older in the United States are vitamin B12 deficient, defined as plasma B12 below 148 pmol/L (2009)

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Sterile filters: Sterile Filters Used In Pharmaceutical Industry-Picture Courtesy: Brother Filtration Sterile filters are considered as integral part of manufacturing of sterile products

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