| BLG | beta-lactoglobulin |
|---|---|
| blH | biologically active luteinizing hormone |
| BLI | bombesin-like immunoreactivity |
| blk | black |
| BLL | below lower limit |
| BLLD | British Library Lending Division |
| BLM | bilayer lipid membrane; bimolecular liquid membrane; bleomycin; buccolinguomasticatory |
| BLN | bronchial lymph node |
| BLOBS | bladder obstruction |
| BLOT | British Library of Tape |