legal age of cigarette purchase A sign with the to cigarettes and tobacco products stands behind the counter a retail store in New York City on April 23, 2013. New York City Mayor Legal Age to Purchase Tobacco

Abbreviations AGE: Advanced glycation end products AZA: 5-Aza-2-deoxycytidine ADRB1: Adrenoceptor beta 1 BRD4: Bromodomain containing 4 C group: Control group COPD: Chronic obstructive pulmonary disease CS: Cigarette smoke CSE: Cigarette smoke extract CDS: Coding DNA sequence Cpt1a: Carnitine palmitoyl transferase 1a COX II: Cytochrome c oxidase subunit II CDKN3: Cyclin-dependent kinase inhibitor 3 ERK: Extracellular signal-regulated kinase EXs: Exosomes EVs: Extracellular vesicles E group: Experiment group EndMT: Endothelial-to-mesenchymal FOXA2: Fork head box protein A2 FAO: Fatty acids H3K4me3: Tri-methylation of H3K4 H3R2me2a: Asymmetric di-methylation of histone H3 arginine 2 HPMECs: Human pulmonary microvascular endothelial cells HUVECs: Human umbilical vein endothelial cells HLMVECs: Human lung microvascular endothelial cells HPVECs: Human pulmonary vascular endothelial cell HPAECs: Human pulmonary artery endothelial cells ICS: Inhaled corticosteroid

Peripheral artery disease is characterized by a buildup of cholesterol in the arteries that carry blood to the legs, resulting in reduced blood flow, pain in the limbs, diminished wound-healing abilities in the legs and several other symptoms that can become serious

Dunhill (cigarette) Dunhill is a British cigarette brand owned and manufactured by Alfred Dunhill Limited and British American Tobacco

Regular cannabis use that can develop into an addiction is oftentimes associated with poorer academic performance and health, according to a recent study from the Texas A&M School of Public Health