NCIt definition : A species of anaerobic, Gram-positive, rod shaped bacteria assigned to the phylum
Actinobacteria. This species is nonmotile, nonsporeforming, catalase and indole negative
and ferments arabinose, xylose, ribose, lactose and melezitose. B. longum is non-pathogenic,
and it helps maintain a healthy digestive system.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Bifidobacterium
longum.;