title: Chromosome studies in pitch warts.
mesh_terms: D000328:Adult; D000368:Aged; D003033:Coal Tar / Q000506:poisoning*; D046508:Culture Techniques; D009783:Dermatitis, Occupational / Q000235:genetics*; D006801:Humans; D007621:Karyotyping; D007636:Keratoacanthoma / Q000235:genetics*; D007642:Keratosis / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D014860:Warts / Q000139:chemically induced* / Q000235:genetics
chemical_list: D003033:Coal Tar