| Abbreviation | Definition |
|---|---|
| IMTB | Institut of Molecular Tumor Biology |
| IMV | Immunology Microbiology and Virology |
| IMV | Institute of Microbiology and Virology |
| INAB | Institute of Applied Biosciences |
| INAB | Instituto Nacional de Bioinformática |
| INB | Instituto Nacional de Bioinformática |
| IPAMS | Invasive Plant Atlas of the MidSouth |
| IPB | Interdepartmental Plant Biology |
| IPBB | Institute of Plant Biology and Biotechnology |
| IPBS | Infectious Perishable Biological Substances |
| IPC | In-Process Control |
| IPNB | Interpersonal Neurobiology |
| IRBS | Illinois River Biological Station |
| ISACB | International Society of Applied Cardiovascular Biology |
| ISAP | Invading Species Awareness Program |
| ISB | Informational and Structural Biology |
| ISB | Institute for Systems Biology's |
| ISB | Integrative Systems Biology |
| ISBC | International School on Biological Crystallization |
| ISBM | Institute for Systems Biology Moscow |