ABC	ATP-binding cassette
ADME	administration distribution metabolism excretion
BCRP	breast cancer resistance protein
CHGA	chromogranin A
CYP3A4	cytochrome P450 (CYP) 3A4
GCs	goblet cells
DT	drug transporter
EECs	enteroendocrine cells
GLUT-2	glucose transporter 2
HROC	Hansestadt Rostock CRC
IECs	intestinal epithelial cells
LC-MS/MS	liquid chromatography–mass spectrometry/mass spectrometry
LYZ	lysozyme
MUC2	mucin 2
NRs	nuclear receptors
OATP2B1	organic anion-transporting polypeptide 2B1
PEPT1	peptide transporter 1
P-gp	permeability glycoprotein
PCs	Paneth cells
PXR	pregnane X receptor
RIF	rifampicin
SLC	solute carrier transporters
TJ	tight junction
VD3	vitamin D3
ZO-1	zonula occludens-1