anti-Tfr	anti-human transferrin receptor
5/6-FAM	5/6-carboxyfluorescein
Boc	tert-butoxycarbonyl
BSA	bovine serum albumin
bt	linear dichroism
Dab	2,4-diaminobutyric acid
Dap	2,3-diaminopropionic acid
DIPEA	N,N-diisopropylethylamine
ELISA	enzyme-linked immunosorbent assay
FACS	fluorescence-activated cell sorting
FCS	foetal calf serum
Fmoc	9-fluorenylmethoxycarbonyl
hArg	homoarginine
HCTU	O-(1H-6-chlorobenzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate
NRP	neuropilin
Oic	octahydroindole-2-carboxylic acid
PBS	phosphate buffer saline
SAR	structure–activity relationship
strep-HRP	streptavidin–horseradish peroxidase conjugate
SWATH	sequential window acquisition of all theoretical mass spectra
TIS	triisopropylsilane
TFA	trifluoroacetic acid
VEGF	vascular endothelial grow factor