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Trauma or foreign body causing black stool Injuries to the gastrointestinal tract or the presence of a foreign object can lead to bleeding and black stools
Vitamin D deficiency was associated with increased oxidative stress and reduced glutathione concentrations in a study by Jain et al
The available scientific information in relation to the quantification of BDNF isoforms in human samples is scarce, and the studies have primarily focused on populations with neurological problems due to the added value of BDNF as a biomarker in these pathologies (Supplementary Table S1)
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