Bifidobacterium longum subsp. longum
Bifidobacterium longum longum
Bifidobacterium longum subsp. infantis
Bifidobacterium longum infantis
Bifidobacterium longum subsp. suis
Bifidobacterium longum suis
Bifidobacterium longum ncc2705
Bifidobacterium longum subsp. suillum