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Figure 2. Raldh3 is expressed during mid to late limb development. Hindlimbs are proximal to the left and posterior uppermost and viewed from the dorsal side, except in E, which is viewed from the ventral side. A: Expression is first seen at st. 52 in a faint patch of cells on the anterior, marked by a yellow arrow. B: Two spots of expression appear in the autopod at st. 53 (black arrows, also shown in C and D). C: Viewed from the ventral side of the tadpole, expression of Raldh3 can be seen in two triangular patches on the ventral side of the limb at st. 53, marked by white arrowheads. D,E: Expression in muscle blocks is shown in the dorsal view of the st. 54 limb (D) and ventral view of st. 55 limb (E), marked by white asterisks. |
