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- Bacils 22
- Back 2
- Backache 9
- Bacon, Francis, 1561-1626 1
- Bacteria 210
- Bacterial adhesion 7
- Bacterial antigens 5
- Bacterial cultures 2
- Bacterial diseases 67
- Bacterial genetics 60
- Bacterial growth 3
- Bacterial spores 3
- Bacterial toxins 12
- Bacterial vaccines 1
- Bacteriologia 24
- Bacteriologia agrícola 3
- Bacteriologia mèdica 10
- Bacteriology 23
- Bacteriophages 57
- Bacteriòfags 57