|
Fig. 5. Localized expression of c-myc in the tailbud embryo. Embryo frontal sections were hybridized with a 35Slabelled
antisense c-myc RNA probe. (A,B,E) Dark-field illumination; (C,D,F) bright-field illumination. A is a general
view which shows that the probe hybridized intensely to epidermis (ep), optic cups (op) and lateral pharyngeal walls
(arrows). Abbreviations: cep, caudal epidermis; en, yolk-laden endoderm; ph, pharyngeal cavity. B and C are a detail of
A in the cephalic region. (D) Caudal region. (E) Frontal section of the anterior part of the embryo showing an intense
signal in the right optic cup (op), the left lens placode (le) and the cephalic epidermis (thick arrow). Periphery of the
right optic cup is preferentially labelled (thin arrow) and might include the wall of the cup; the less preferentially
labelled inner region might include part of the cup cavity. The left optic cup (asterisk) is more weakly labelled because
the cut plane barely crosses the cup. g, gut. (A,D) x50; (B,E,F) x90; (C) x!40. |