What are the ingredients in ProBiota Infant Powder sourced from?

Ingredient	Source
Bifidobacterium bifidum, Bifidobacterium longum, Bifidobacterium lactis, Bifidobacterium breve, Bifidobacterium infantis, Lactobacillus salivarius, Lactobacillus rhamnosus, Lactobacillus casei, Lactobacillus paracasei, Lactobacillus gasseri	Microbial fermentation media

All ingredients are derived from natural microorganisms via plant-based, hypoallergenic fermentation media.