The function of niacin explained by the tolerance theory.
D004361:Drug Tolerance; D006801:Humans; D007108:Immune Tolerance; D007778:Lactobacillus; D009525:Niacin / Q000494:pharmacology*; D009539:Nicotinic Acids
D009539:Nicotinic Acids; D009525:Niacin
LACTOBACILLUS; NICOTINIC ACID/effects