What are the active ingredients in ProBiota Bifido sourced from?

Ingredient	Source
Bifidobacterium longum (Bl-05), Bifidobacterium bifidum/lactis (Bb-02), Bifidobacterium infantis (Bi-26), Bifidobacterium bifidum (Bb-06), Bifidobacterium lactis (Bl-04), Bifidobacterium lactis (Bl-07), Bifidobacterium breve (Bb-03)	Microorganism fermentation media