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4.2 Animals Approximately six-week-old SD rats weighing approximately 220 g were purchased from Beijing Vital River Laboratory Animal Technology Co., Ltd

Single-Nutrient Supplements : These supplements contain a specific vitamin or mineral, such as Vitamin C, Vitamin D, or Iron

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Reference lists were also examined for any additional relevant studies not identified through the search

OTC Vitamin B12 Options Prescription vitamin B12 injections and over-the-counter oral supplements are two ways to treat B12 deficiency

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