Atypical infectious mononucleosis in the elderly.
D000368:Aged; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007244:Infectious Mononucleosis / Q000175:diagnosis* / Q000276:immunology; D008875:Middle Aged
D007074:Immunoglobulin G; D007075:Immunoglobulin M