Microbiology Microbes 39 Metabolism 14 viruses 10 Bacteria 8 Fungi 7 Immunology 7 Microorganisms 7 Morphology 7 Viruses 7 fungi 7 metabolism 6 microorganisms 6 morphology 6 Aquatic Microbiology 4 Biology 4 Dairy Microbiology 4 Food Microbiology 4 General Microbiology 4 Industrial Microbiology 4 Micro-organisms 4 Microbial Genetors 4 Sanitary Microbiology 4 Soil Microbiology 4 bacteria 4 Cultures and culture media 3 Micro organisms 3 Microbial genetics 3 Photosynthesis 3 ecology 3