- Ecotoxicology 8
- Environmental Chemistry 8
- Environmental Health 8
- Atmospheric Protection/Air Quality Control/Air Pollution 5
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 5
- Cell Biology 4
- Environment, general 4
- Soil Science & Conservation 4
- Biochemistry, general 3
- Cancer Research 3
- Cardiology 3
- Medical Biochemistry 3
- Monitoring/Environmental Analysis 3
- Pollution, general 3
- Stem Cells 3
- Animal Anatomy / Morphology / Histology 2
- Animal Biochemistry 2
- Animal Genetics and Genomics 2
- Cell Culture 2
- Developmental Biology 2