There are multiple definitions:

1. bare lymphocyte syndrome(English)

   • condition caused by mutations in certain genes of the major histocompatibility complex or involved with the processing and presentation of MHC molecules
   • MHC
   • Genetics, Immunology
   • https://www.chp…hocyte-syndrome

2. Bureau of Labor Statistics(English)

   • Statistics, Organizations (documentation)

3. basic life support(English)

   • course trains participants to promptly recognize several life-threatening emergencies, give high-quality chest compressions, deliver appropriate ventilations and provide early use of an AED
   • ALS, ILCOR, NLS, PLS, EMT, AED, CPR, ECR, PEA, ERC, NRR
   • Emergency medicine, Education
   • https://cpr.hea…rt-bls-training

4. basal longitudinal strain(English)

   • Doppler-based strain for six segments
   • AFI, ALS, GLS, MLS
   • Medical imaging, Doppler technique
   • https://doi.org…1111/echo.13278

5. bystander life support(English)

   • an important part of cardiopulmonary resuscitation (CPR) and improves outcome after out-of-hospital cardiac arrest
   • AED, BLS-AED, CPR, HOT, TTFS
   • Emergency medicine, Cardiology
   • https://doi.org…ion.2005.10.027

6. bivariate least square [regression](English)

   • CBLS, CEIV, OLS
   • Statistics
   • https://doi.org/10.1002/sim.6872