Bifidobakterier:
1. Bifidobacterium ungdomsårene
2. Bifidobacterium animalis (Bifidobacterium lactis)
3. Bifidobacterium bifidum
4. Bifidobacterium breve
5. Bifidobacterium infantis
6. Bifidobacterium longum
Lactobacillus:
1. Laktobacillus acidophilus
2. Lactobacillus casei
3. Laktobacillus crispatus
4. Lactobacillus delbrueckii subsp. bulgaricus (Lactobacillus bulgaricus)
5. Lactobacillus delbrueckii subsp. laktier
6. Lactobacillus fermentum
7. Lactobacillus geranium
8. Laktobacillus helveticus
9. Lactobacillus johnsonii
10. Lactobacillus paracasei
11. Lactobacillus plantarum
12. Lactobacillus reuteri
13. Lactobacillus rhamnosus
14. Lactobacillus salivarius
Streptococcus:
1. Streptokokker thermophilus