There are multiple definitions:

1. Central European encephalitis(English)

   • RSSE, TBE
   • Brain (dys)function

2. chicken embryo extract(English)

   • PAA, PMO
   • Culture medium, Experimental animal
   • https://doi.org…707601b237467d7

3. chicken embryonated egg(English)

   • BF, IBD, IBDV, vvIBDV
   • Veterinary medicine, Virology
   • https://doi.org…55/2017/8359047

4. conjugated equine estrogen(English)

   • BHT, HT, LILACS, HDL, LDL, MPA, SSR, TG, PEPI
   • Estrogen, Veterinary medicine, Woman /female, Therapeutic approaches
   • https://doi.org…8.CD010407.pub2
   • https://doi.org…75570-4/00247-X