There are multiple definitions:

1. phosphate-buffered saline(English)

   • Abbreviation may be used in Am. Soc. Physiol. journals without definition.
   • CBS, PB, AI, NOG
   • Physiology, Culture medium
   • https://doi.org…imc.2014.04.014
   • https://doi.org…0441-008-0655-z

2. polarizing beam splitter(English)

   • CARS, OPO, SRS
   • Bioengineering, Photonics

3. primer binding site(English)

   • endemic species are especially vulnerable to biodiversity loss caused by isolation or habitat specificity, small population size, and anthropogenic factors
   • DNA, tRNA
   • Environment, Genetics

4. Pediatric Balance Scale(English)

   • a modification of Berg's Balance Scale, was developed as a balance measure for school-age children with mild to moderate motor impairments
   • Pediatrics, Physical therapy
   • https://doi.org…068117.48023.18

5. Pharmaceutical Benefits Scheme(English)

   • refers to a comprehensive tobacco control program
   • ITC, TATS
   • Pharmacology / pharmaceutics, Addiction and health
   • https://doi.org…1753-6405.13031

6. protective behavioral strategy(English)

   • used to prevent increased risk for problematic alcohol use
   • Alcohol, Addiction and health, Behavior(al science)
   • https://doi.org…1037/pha0000568

7. push-out bond strength(English)

   • a test, also denoted as POBS
   • POBS, AC, BCS, CC, DC, NC, PC, SEM
   • Dentistry
   • https://doi.org…903-023-03778-2