EphA3, EphA4 and EphA7 expression in the craniofacial region of E12.5 mouse embryos. In-situ hybridization of frontal sections of E12.5 embryos for EphA3 (A, D, G), EphA4 (B, E, H), and EphA7 (C, F, I) probes show overlapping expression of all three receptors in the LNP, MNP, MXP, nasal septum, palatal shelves and tongue. MXP, maxillary prominence; LNP, lateral nasal prominence; MNP, medial nasal prominence; MXP, maxillary prominence; NS, nasal septum; PS, palatal shelves; T, tongue. Scale bar = 100μm.