BoNT/A-LC	Botulinum neurotoxin serotype A light chain
BSA	Bovine serum albumin
CDR	Complementarity-determining region
ELISA	Enzyme-linked immunosorbent assay
EMA	European Medicines Agency
Fab	Fragment antigen-binding
FDA	Food and Drug Administration
Flu	Fluorescein
HCAb	Heavy-chain-only antibody
sdAb	Single-domain antibody
scFv	single-chain variable fragment
VH	Heavy chain variable domain
VHH	variable domain of camelid heavy-chain-only antibodies
VL	Light chain variable domain
VNAR	Variable domain of the immunoglobulin new antigen receptor (IgNAR) from sharks