title: Identification of human papillomavirus DNA in smokeless tobacco-associated keratoses from juveniles, adults and older adults using immunocytochemical and in situ DNA hybridization techniques.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004279:DNA, Viral / Q000302:isolation & purification*; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D007150:Immunohistochemistry; D007972:Leukoplakia, Oral / Q000145:classification / Q000382:microbiology*; D008297:Male; D008875:Middle Aged; D009693:Nucleic Acid Hybridization; D027383:Papillomaviridae / Q000302:isolation & purification*; D010947:Plants, Toxic; D013194:Staining and Labeling; D014026:Nicotiana; D014030:Tobacco, Smokeless
chemical_list: D004279:DNA, Viral