Ac-DEVD-AFC	N-Acetyl-Asp-Glu-Val-Asp-7-amido-4-trifluoromethylcoumarin
Ac-IETD-AFC	N-Acetyl-Ile-Glu-Thr-Asp-7-amido-4-trifluoromethylcoumarin
Ac-LEHD-AFC	N-Acetyl-Leu-Glu-His-Asp-7-amido-4-trifluoromethylcoumarin
ACN	Acetonitrile
CYP	Cytochrome P450-monooxygenases
DHP	Dehydropyrrolizidine alkaloid
DMSO	Dimethyl sulfoxide
FBS	Fetal bovine serum
MTT	3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromid
PA(s)	Pyrrolizidine alkaloid(s)
(q)PCR	(quantitative) Polymerase chain reaction
SDS	Sodium dodecyl sulfate