<prompt> Which among the following is seen in antiphospholipid antibody syndrome?Beta 2 microglobulin antibodyAnti nuclear antibodyAnti centromere antibodyAnti glycoprotein antibody  <response>: Antiphospholipid antibody syndrome is characterized by antibodies against phospholipid beta 2-glycoprotein 1 complex. For detail, see text under SLE. 