4-ABP	4-aminobiphenyl
8-oxoG	8-oxi-7,8-dihydroguanine
AAH	Atypical adenomatous hyperplasia
ACE	Angiotensin-converting-enzyme
Ach	acetylcholine
ADC	Adenocarcinoma
ALK	Anaplastic lymphoma kinase
ARBs	Angiotensin receptor blockers
ARE	Antioxidant response element
ATBC	Alpha-Tocopherol Beta Carotene
B(a)P	Benzo[a]pyrene (B[a]P)
CARET	β-Carotene and Retinol efficacy Study
CDC	Center for Disease Control and Prevention
CIS	Squamous dysplasia and carcinoma
COPD	Chronic obstructive pulmonary disease
COX-2	Cyclooxygenase-2
DEC	Dysfunctional endothelial cells
EGFR	Epidermal growth factor receptor
EVALI	E-cigarette, or vaping, product use–associated lung injury
HNE	Trans-4-hydroxy-2-nonenal
IGF	Insulin-like growth factor
IEN	Intraepithelial neoplasia
Keap-1	Kelch-like ECH-associated protein 1
MDA	Malondialdehyde
nAChR	nicotinic acetylcholine receptor
NF-κB	Nuclear factor-κB
NNAL	Nnitrosamine alcohol
NNK	Nitrosamine ketone
NNN	N-nitrosonicotine
Nrf2	Nuclear factor E2-related factor 2
NSAIDs	Non-steroidal anti-inflammatory drugs
NSCLC	Non-small cell lung cancer
p38 MAPK	p38 mitogen-activated protein kinases
PGE-2	COX2/prostaglandin E2
PPARγ	Peroxisome proliferator-activated receptor gamma
ROS	Reactive oxygen species
SCLC	Small cell lung cancer
SCC	Squamous cell carcinomas
Se	Selenium
TKIs	TK inhibitors
TZD	Thiazolidinedione