WNT1 and cleft palate: Histological staining showed that both Wnt1-Cre; Fam20bf/f and Wnt1-Cre; pMes-caBmpr1a mice had cleft palate, while the pMes-caBmpr1a transgene (Wnt1-Cre; Fam20bf/f; pMes-caBmpr1a mice) failed to rescue the cleft palates (Figure 7I–X).