| |
Fig. 2. Xtn3 is developmentally expressed throughout the somites, heart, and jaw myoblasts from early neurula to late tailbud stages. (A–P) In situ hybridization showing expression of the Xtn3 at the indicated stages. (A–C) Neurula stage embryos. Anterior is to the left. (A and C) Dorsal views. (B) Lateral view. (D–M) Tailbud stage embryos. (E, G, I, K, and M) Ventral anterior views. Anterior is up. (H) Inset shows higher magnification of somite region. Bracket indicates one individual somite. (N) Tadpole stage embryo. Note the lack of staining in trunk and heart. Some light staining remains in facial muscles. (O and P) Adult heart lacking global Xtn3 expression. (P) A magnification of (O). Black arrowhead indicates isolated group of Xtn3-expressing cells. h, heart; hp, heart primordia; jm, jaw myoblasts; psm, presomitic mesoderm; pc, pigment cells; vm, ventral myoblasts; s, somites; t, trunk. |
