Figure 3.

Dentition in smoc2 Morphants

The heads of the control (A) and the smoc2-2 morphants (B–D) stained with alizarin red at 5 dpf show different degrees of reduction of pharyngeal tooth size (arrows in B and C) and the complete absence of pharyngeal teeth (black stars in D) in the morphants. Control (E) and morphant (F and G) teeth are shown at higher magnification. Note the misorientation and the difference in the shape of the teeth in (F) compared to the control. Compared to the control (H and J), the morphants (J and K) show no additional emerging teeth. The white stars represent the transparent second tooth. The scale bars represent the following measurements: (A–D): 50 μm; (E–G): 25 μm; and (H–K): 12 μm. The following terms are abbreviated: branchiostegal ray (br); ceratobranchial 5 (cb5); parasphenoid (ps); ceratohyal (cl); notochord (nc); and opercle (op). All embryos are presented in ventral view, anterior up.