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Fig. 7
(A,C,E,F,G) Nomarski optics and (B,D,H) fluorescence pictures of transplantation experiments performed in doctt258 mutant embryos. Lateral view, anterior to the left. (A-D) Only wild-type derived donor cells in a mutant environment give rise to vacuolated notochord cells. Two different experiments are shown (A,B and C,D). (E) Wild-type cells in a mutant environment at 24 hours of development induce a horizontal myoseptum in some neighboring somites on day 3 (arrow in F). Mutant donor cells in wild-type somites give rise to normal horizontal myosepta (arrows in G,H), which can be identified by their strong fluorescence. In some regions this strong fluorescence is quenched by melanophores populating the horizontal myoseptum.