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Description
1 2 "Vitamin B12 production by Citrobacter freundii or Klebsiella pneumoniae during tempeh fermentation and proof of enterotoxin absence by PCR"
Microbiol Mol Biol Rev 80:9891010
Nygrd et al, 1997a
Your doctor might recommend a vitamin D test if you exhibit symptoms or have risk factors for deficiency: Symptoms: Chronic fatigue, bone pain, muscle weakness, frequent infections, depression, hair loss
