PAHs	polycyclic aromatic hydrocarbons
SFN	sulforaphane
OVA	ovalbumin
BaP	benzo(a)pyrene
TETs	ten-eleven translocation methylcytosine dioxygenases
HMT	histone methyltransferase
POPs	persistent organic pollutants
HDAC	histone deacetylase
DNMT	DNA methyltransferase
Fla	fluoranthene
Pyr	pyrene
BaA	benz(a)anthracene
Chr	chrysene
BbF	benzo(b)fluoranthene
BkF	benzo(k)fluoranthene
INP	indeno(l,2,3-cd)pyrene
DBA	dibenz(a,h)anthracene
BgP	benzo(g,h,i)perylene
EI	Electron Impact ionization
LOD	limit of detection
ND	not detected
PND	postnatal day
BALF	bronchoalveolar lavage fluid
H&E	hematoxylin and eosin
PAS	Periodic Acid–Schiff
IgE	immunoglobulin E
IL-4	interleukin-4
ELISA	enzyme-linked immunosorbent assay
WBC	white blood cell
HBE	human bronchial epithelial cells
HBSMCs	human bronchial smooth muscle cells
DMSO	dimethyl sulfoxide
Methyl-RAD	methylation-dependent restriction enzyme sequencing method
DMSs	differentially methylated sites
DMGs	differentially methylated genes
GO	Gene Ontology
KEGG	Kyoto Encyclopedia of Genes and Genomes
BSP	Bisulfite Sequencing PCR
PCR	polymerase chain reaction
CUT&RUN	cleavage under targets and release using nuclease
OR	odds ratio
Mmp9	matrix metallopeptidase 9
LINE-1	long interspersed nuclear element-1
IFN-γ	interferon-gamma
IL-4	interleukin-4
FoxP3	forkhead box P3
MMP9	matrix metallopeptidase 9
IL-17A	interleukin-17A
ECM	extracellular matrix
Dnmt1	DNA methyltransferase 1
Dnmt3a	DNA methyltransferase 3A
Dnmt3b	DNA methyltransferase 3B
Tet1	ten-eleven translocation 1
Tet2	ten-eleven translocation 2
Tet3	ten-eleven translocation 3
TGF-β	transforming growth factor beta 1
DNMT1	DNA methyltransferase 1
DNMT3A	DNA methyltransferase 3A
DNMT3B	DNA methyltransferase 3B
TET1	ten-eleven translocation 1
TET2	ten-eleven translocation 2
TET3	ten-eleven translocation 3
CGI	CpG island
1-OHPyr	1-hydroxypyrene
ROS	reactive oxygen species
AP-1	activator protein-1