There are multiple definitions:

1. chemoluminescence immunoassay(English)

   • Biochemistry, Immunology

2. collagen-induced arthritis(English)

   • also referring to an experimental model with many features that resemble RA
   • ATD, IDDM, QTL, RA, SE
   • Immunology, Musculoskeletal system, Experimental animal, Model(ing)
   • https://doi.org…al.pone.0116227
   • https://doi.org…als.hmg.a018915

3. common iliac artery(English)

   • are more likely to be crossed successfully in the retrograde direction
   • CTO, EIA, IIA
   • Anatomy, Vessel properties
   • https://doi.org…872-020-01715-7

4. chronic intermittent alcohol(English)

   • AUD, MOAS, SBF-SEM
   • Alcohol, Mitochondrion
   • https://doi.org…ins.2020.561173

5. chicken infectious anemia(English)

   • CIAV, HPS, IBD, IgM
   • Virology, Veterinary medicine
   • https://doi.org…1259-006-3278-4

6. Critically Important Antibiotics(English)

   • AAD, AMS, AMU, CA, VTH, WHO
   • Bacteriology, Therapeutic approaches, Pharmacology / pharmaceutics
   • https://doi.org…598-023-44485-w