From: Treatment of Refractory Whipple Disease with Interferon-γ Ann Intern Med. 1998;129(11_Part_1):875-877. doi:10.7326/0003-4819-129-11_Part_1-199812010-00006 Figure Legend: Effects of interferon-γ therapy.Black diamonds indicate body weight; black triangles indicate serum concentration of β-carotene; white diamonds indicate CD4+ T-cell count in the peripheral blood; and white triangles indicate interferon-γ concentrations produced by peripheral blood mononuclear cells after stimulation with phytohemagglutinin isolated from the patient before, during, and after interferon-γ therapy. Date of download: 11/12/2017 Copyright © American College of Physicians. All rights reserved.