Figure 4From: Mesodermal gene expression during the embryonic and larval development of the articulate brachiopod Terebratalia transversa Expression patterns of Tt.Pax1/9 and Tt.MyoD. All images are oriented with anterior to the left. Panels (A-D) and (I-L) are lateral views. Panels (E, F) and (M, N) are blastoporal views. Panels (G, H) and (O, P) are ventral views. For detailed descriptions of expression patterns, see text. (A-H) Tt.Pax1/9 expression in the lateral and posterior archenteron walls at gastrula stages. Expression in the mesoderm of the mantle and pedicle lobes in larval stages. (I-P) Tt.MyoD expression in the lateral and posterior archenteron walls at gastrula stages. Expression in the lateral mesoderm of the apical, mantle, and pedicle lobes at larval stages.Back to article page