title: Letter: Lymphocytopenia in patients treated with phenytoin.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006801:Humans; D007958:Leukocyte Count; D008231:Lymphopenia / Q000139:chemically induced*; D008875:Middle Aged; D010672:Phenytoin / Q000009:adverse effects* / Q000627:therapeutic use
chemical_list: D010672:Phenytoin