Figure 1From: Wnt1 is epistatic to Id2 in inducing mammary hyperplasia, ductal side-branching, and tumors in the mouseThe Wnt1 transgene was crossed into an Id2 -/- background in order to produce cohorts of WT, Id2 +/-, and Id2 -/- females with and without the Wnt1 transgene. The scheme was designed so that mothers could feed their own young and so that all cohorts being compared would share a common background.Back to article page