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Fig. 7. Ecd-deficient cells do not survive in proliferating imaginal discs.
ecd2/ecd2 (top row) and mbf1/mbf1
(bottom row) null mutant clones were induced during the first larval instar.
Only the sister ecd+/+ clones, marked by the intensive
expression of P[w+, ub-GFP], are found in the adult eye
(A), eye-antennal discs (B) and wing discs (C), whereas
ecd cells are absent. Clones lacking mbf1,
P[w+, ub-GFP] are maintained in all these imaginal tissues
(D-F, arrows).