|
|
|
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 5. Dpp signaling pathway is activated during squamous morphogenesis in the
wing disc. Color images show p-MAD (red) and 
-spectrin (green). Black
and white images (A'-D') show p-MAD and (D'')
-spectrin alone. Wing discs are from larvae at 67 hours AED
(A,A'), 72 hours AED (B,B') and 96 hours AED (C,C').
(A,A') Prior to squamous morphogenesis, p-MAD is present in a ventral
wedge in the PE. (B,B') Early in squamous morphogenesis, a stripe of
p-MAD expression appears in the PE (yellow arrowhead). (C,C') During the
third instar, p-MAD expression broadens and is observed in the majority of
squamous cells of the posterior compartment in the PE. (D-D'')
Enlargement of region boxed in C. (D-D'') p-MAD is observed only
in squamous cells of the posterior compartment and is absent from margin cells
(C,D') in both A and P compartments of the PE. (E) hh-lacZ
expression in the wing PE from a wandering third instar larva. Scale bar in A:
50 µm.
|
