| IBL | Immunoblastic Lymphadenopathy |
|---|---|
| IBM | Inclusion body myositis |
| IBMTR | International Bone Marrow Transplant Registry |
| IBMX | 3'-isobutylmethylxanthine |
| IBN | inhibitory burst neuron |
| IBO | Ibotenic acid |
| IBO | ibotenate |
| IBQ | Illness Behavior Questionnaire |
| IBR | Immediate breast reconstruction |
| IBR | Infections bovine rhinotracheitis |