A.D.A.M. Multimedia EncyclopediaABCDEFGHIJKLMNOPQRSTUVWXYZ(0-9) DiseaseX-linked AdrenoleukodystrophyX-linked agammaglobulinemiaX-linked copper deficiencyXanthelasmaXanthomaXanthoma - eruptiveXeroderma pigmentosumXerophthalmiaXerosisXerostomia - Sjögren syndromeXerostomia-Sjogren syndromeXerostomia-Sjögren syndromeXOXXY syndromeXXY trisomyA.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.