%	per cent
μm	micrometer
μM	micromolar
5-FU	5-fluorouracil
AMP	adenosine monophosphate
AMPK	AMP-activated protein kinase
CAFs	cancer-associated fibroblasts
CC3	cleaved caspase-3
CDA	cytidine deaminase
CM	conditioned medium
d0	day 0
DAPI	4′,6-diamidino-2-phenylindole
dCK	deoxycytidine kinase
DCTD	deoxycytidylate deaminase
dFdC	2′,2′-difluoro-2′-deoxycytidine
dFdCMP	2′,2′-difluoro-2′-deoxycytidine monophosphate
dFdCDP	2′,2′-difluoro-2′-deoxycytidine diphosphate
dFdCTP	2′,2′-difluoro-2′-deoxycytidine triphosphate
dFdU	2′,2′-difluoro-2′-deoxyuridine
DMEM	Dulbecco's Modified Eagle Medium
DNA	deoxyribonucleic acid
FBS	fetal bovine serum
g	gram(s)
h	hour(s)
H&E	hematoxylin and eosin
HA-tag	hemagglutinin tag
hEnt	human equilibrative nucleoside transporter
HRP	horseradish peroxidase
HSP90	heat shock protein 90
ICC	immunocytochemistry
IHC	immunohistochemistry
IgG	immunoglobulin G
kg	kilogram
KPC	LSL-KrasG12D/+;LSL-Trp53R172H/+;Pdx-1-Cre
LC-MS/MS	liquid chromatography tandem mass-spectrometry
MEM	Minimum Essential Media
mg	milligrams
M-MLV	Moloney Murine Leukemia Virus
mRNA	messenger ribonucleic acid
MTT	3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide
nM	nanomolar
ns	non-significant
NT5	5′-nucleotidase
NT5C1A	cytosolic 5′-nucleotidase 1A
PBS	phosphate buffered saline
PDAC	pancreatic ductal adenocarcinoma
pM	picomolar
PSCs	pancreatic stellate cells
qRT-PCR	quantitative real-time polymerase chain reaction
RRM1	ribonucleotide reductase M1
SEM	standard error of mean
TAM	tumor-associated macrophages
TMA	tissue microarray
TME	tumor microenvironment
U.S.	United States
WB	Western blot