| Abbreviation | Definition |
|---|---|
| ISBM | International Symposium on Biological Monitoring |
| ISBW | International Seagrass Biology Workshop |
| ISCB | Indian Society of Cell Biology |
| ISCB | integrative Structural Chemical Biology |
| ISIB | Institute of Biomedical Engineering |
| ISMB | Institute of Structural and Molecular Biology |
| ISMB | Institute of Structural Molecular Biology |
| ISMB | Intelligent Systems in Molecular Biology |
| ISMB | International Society for Matrix Biology |
| ISNB | International Society of Network Biology |
| ISPB | International Society for Plasmid Biology |
| ISPP | International Symposium on Plant Photobiology |
| ISRB | Indian Society for Radiation Biology |
| ISSB | Institute of Systems Synthetic Biology |
| ISSB | International Society for Subterranean Biology |
| ISSB | International Society for Systems Biology |
| ISSM | International Society for Subsurface Microbiology |
| ITB | Institute for Theoretical Biology |
| ITBC | Institute for Tropical Biology and Conservation |
| ITIS | Integrated Taxonomic Information System |