T-cell chronic lymphocytic leukemia. Report of a helper cell case.
D006801:Humans; D007945:Leukemia, Lymphoid / Q000276:immunology* / Q000648:ultrastructure; D008297:Male; D008875:Middle Aged; D013601:T-Lymphocytes / Q000276:immunology* / Q000648:ultrastructure; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology* / Q000648:ultrastructure