Whole mount in situ expression analysis of: 2610017I09Rik (A–D); 9430073N08Rik, Fam162b (E, F); Elav14 [HuD] (G); Prr15 (H, I); Fam107a (J–L); Wscd1 (M–P); and Image 6309403 (Q, R) showing lateral (A, D, E, G, H, J, M, P, Q) or ventral (B, C, F, I, K, L, N, O, R) views of E10.5 (A, B, E–K, M, N, Q, R) or E11.5 (C, D, L, O, P) mice. Note for panel G that despite the clear expression of Elavl4 in the trigeminal ganglia, we did not detect expression in the MxP and MdP RNA samples we had purified for microarray analysis. This finding provides additional proof that the samples we have purified were not significantly contaminated with surrounding tissue. Abbreviations: drg, dorsal root ganglia; e, eye; fn, frontonasal prominence; h, hyoid arch; l, lateral nasal prominence; m, medial nasal prominence; md, mandibular prominence; ov, otic vesicle; p, nasal pit; t, telencephalon; tg, trigeminal ganglion; x, maxillary prominence.