Figure 9From: BMP-6 inhibits growth of mature human B cells; induction of Smad phosphorylation and upregulation of Id1Relative protein expression of Id1, Id2 and Id3. Quantifications of Id1, Id2 and Id3 protein levels were performed using β-actin as normalization and expressed as mean ± SEM (Id1: n = 4, *p ≤ 0.020; Id2 and Id3: n = 3).Back to article page