BBL meaning in Medical ?

The North American Bird Banding Program (NABBP), along with its Bird Banding Laboratory (BBL), has its home at the Patuxent Wildlife Research Center. The program is jointly administered by the Canadian Wildlife Service (and its Bird Banding Office) and the United States Geological Survey. The program is responsible for many aspects of bird banding in the United States and Canada: it grants permits to bird banders, fills orders for bands of various sizes, collects data from banding stations, receives reports from people who have found birds carrying bands, and makes its database available to appropriate parties.

The Patuxent center also operates its own banding station on the refuge grounds.