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AR_21112_sm_suppinfofig1.tif7458KSupplementary figure 1. Fig. 1. In situ hybridization for Msx1 and Msx2 on sagital sections of E11.5 mouse embryos. Msx1 and Msx2 are expressed in the maxillary (mx) and mandibulary (md) part of the first branchial arch, thoracic body wall (tb), the hindlimb bud (hl), the neural tube (nt) and specific parts of the developing brain (arrows). Msx1 is also expressed in the developing anterior pituitary (ap).

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