- 1. Streptococcus lactis, milk souring bacteria Lieder_2701d
- 2. Streptococcus lactis, milk souring organism, short chains Lieder_3004d
- 3. Streptococcus lactis, milk souring organism, smear from culture showing short chains Lieder_3808d
- 4. Lactobacillus bulgaricus (Thermobacterium), Yoghurt bacteria (Bulgarian soured milk), from culture Lieder_3810d
- 5. Fresh milk, stained for fat Lieder_7108d
- 6. Sour milk, stained for bacteria Lieder_7109d
- 7. Milk, stained for fat Lieder_7620d
- 8. Lactobacillus bulgaricus (Thermobacterium), Yoghurt bacteria (Bulgarian soured milk), from culture Lieder_Ba127d
- 9. Bacteria from sour milk, smear Lieder_Ba183d