[Beta 2-microglobulin in serum of patients with infectious mononucleosis].

: Serum beta 2-microglobulin concentrations were assayed in twenty patients with infectious mononucleosis. Pairs of sera taken from each patient in the first week of hospitalisation and two weeks later were tested. There was a significant increase of beta 2-microglobulin levels in these patients compared to the control group. A raised serum beta 2-microglobulin concentration persists during the convalescent period.