U1 small nuclear ribonucleoprotein Ab.IgG:PrThr:Pt:Ser:Ord
u1 small nuclear ribonucleoprotein ab.igg:prthr:pt:ser:ord
U1 small nuclear ribonucleoprotein IgG Ab [Presence] in Serum
u1 small nuclear ribonucleoprotein igg ab [presence] in serum