| Abbreviation | Definition |
|---|---|
| BLAS | Bronx Longitudinal Aging Study |
| BLASP | Barbados Low-dose Aspirin Study in Pregnancy |
| BLAT | Baltimore Longitudinal Study of Aging |
| BLAT | BLAST-Like Alignment Tool (BLAT) Molecular biology |
| BLC | B lymphoblastic cells |
| BLC | basolateral complex |
| BLC | biceps labral complex |
| BLC | blood lead concentration |
| BLCCB | Black Country Local Collaborative Commissioning Board |
| BLEO-COMF | bleomycin, cyclophosphamide, Oncovin, MTX, 5-FU, a chemotherapy regimen |
| BLEO-MOPP | bleomycin, nitrogen mustard, Oncovin, procarbazine, prednisone, a chemotherapy regimen. |
| BLIPS | Brief Limited Intermittent Psychotic Symptoms |
| BLM | basolateral membrane |
| BLM | bilayer lipid membrane |
| BLM | bimolecular lipid membrane |
| BLM | black lipid mmbrane |
| BLM | bleomycin |
| BLOSS | Beta Blocker Length Of Stay Study |
| BLROA | British Laryngological, Rhinological & Otological Association |
| BLS | backward light scatter |