title: Polygonal CD34 positivity portends trichilemmal differentiation.
authors.affiliation: Department of Pathology and Dermatology, University of California, San Francisco, California, USA. Tim.McCalmont@ucsf.edu
authors.forename: Timothy H
authors.initials: TH
authors.lastname: McCalmont
authors.forename: Philip E
authors.initials: PE
authors.lastname: LeBoit
mesh_terms: D018952:Antigens, CD34 / Q000378:metabolism*; D014408:Biomarkers, Tumor / Q000378:metabolism; D049109:Cell Proliferation; D003937:Diagnosis, Differential; D006201:Hair Diseases / Q000175:diagnosis* / Q000378:metabolism; D018859:Hair Follicle / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007124:Immunoenzyme Techniques / Q000379:methods; D015603:Keratinocytes; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000378:metabolism
chemical_list: D018952:Antigens, CD34; D014408:Biomarkers, Tumor