Heparin Increases HLA-G Levels in Primary Antiphospholipid Syndrome - Carvalho, Jozélio Freire de; Oliveira, Ricardo M. de; Rodrigues, Carlos Ewerton Maia; Glezer, Andréa; Bonfá, Eloísa; Pereira, Rosa Maria Rodrigues (Clinical and Developmental immunology, 2012)