U2 small nuclear ribonucleoprotein Ab:ACnc:Pt:Ser:Qn
u2 small nuclear ribonucleoprotein ab:acnc:pt:ser:qn
U2 small nuclear ribonucleoprotein Ab:ACnc:Pt:Ser:Qn
u2 small nuclear ribonucleoprotein ab:acnc:pt:ser:qn