M 51 - M 54.2 Biology
| M51 | General | |
| M51.1 | Studies in Biology | |
| M51.2 | [New] Studies in Biology | |
| M52 | Physical sciences, computing and mathematics for biology | |
| M53.1 | General and molecular genetics | |
| M53.2 | Evolution | |
| M53.3 | Ecology | |
| M53.4 | Behaviour | |
| M54.1 | Cell biology. Developmental biology | |
| M54.2 | Immunology |