Phosphoinositide 3 Kinase, p85 beta (PI-3 Kinase p85 beta, PI3 Kinase p85 beta Subunit, PI3 Kinase p85 Subunit beta, PI3K, p85 beta, P85B, Phosphatidylinositol 3 Kinase Regulatory beta Subunit, Phosphatidylinositol 3 Kinase Regulatory Subunit beta, Phosphatidylinositol 3 Kinase Regulatory Subunit Polypeptide 2, Phosphoinositide 3 Kinase Regulatory Subunit 2 (beta), Phosphoinositide 3 Kinase Regulatory Subunit Polypeptide 2 (p85 beta), PIK3R2, PtdIns-3-kinase p85 beta) (MaxLight 550)