- Ecology 4
- Engineering, general 4
- Environment, general 4
- Stem Cells 4
- Atmospheric Protection/Air Quality Control/Air Pollution 3
- Biodiversity 3
- Biomedicine, general 3
- Cell Culture 3
- Conservation Biology/Ecology 3
- Evolutionary Biology 3
- Geophysics/Geodesy 3
- Internal Medicine 3
- Materials Science, general 3
- Oceanography 3
- Proteomics 3
- Surgical Orthopedics 3
- Antibodies 2
- Cell Cycle Analysis 2
- Characterization and Evaluation of Materials 2
- Chemistry/Food Science, general 2