Lack of cryoglobulin in primary antiphospholipid syndrome

• Jozélio Freire de Carvalho,
• Yehuda Shoenfeld

1Department of Internal Medicine and Diagnostic Support, Medical School, Federal University of Bahia, Salvador, Bahia, Brazil 2Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel Hashomer, Israel 3Ariel University, Ariel, Israel 4Laboratory of the Mosaics of Autoimmunity, I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia 5Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel