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Fig. 7. A model for the role of apoptosis in Xenopus neurodevelopment. (A)
Mesoderm patterning in wild-type (left panel) or embryos in which apoptosis
has been inhibited through BCL2 or Xbarhl2AS injection
(right panel). Chordin expression is in dark blue. Xvent2
expression is in light yellow. The neuroectoderm is in blue. The apoptotic
area is shown in black. (B) Neuroectodermal patterning in similarly injected
embryos. Xshh expression is in red. Gli1 expression is in
bright yellow. Gli3 expression is in violet. Xsox3
expression is in blue.