title: Diagnosis and classification of the polycythemias.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D004906:Erythrocyte Count; D004912:Erythrocytes / Q000166:cytology; D005260:Female; D006400:Hematocrit; D006632:Histamine / Q000097:blood; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D011086:Polycythemia / Q000145:classification* / Q000175:diagnosis; D011087:Polycythemia Vera / Q000175:diagnosis*; D012737:Sex Factors
chemical_list: D006632:Histamine