Radiotherapy and persistent reduction of peripheral T cells.
D001943:Breast Neoplasms / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008231:Lymphopenia / Q000209:etiology / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000528:radiation effects*; D050378:T-Lymphocytes, Regulatory / Q000528:radiation effects*