Fig. 2. Requirement for Src functions in tracheal morphogenesis. (A-D) Snap-shot images from a time-lapse series of tracheae labeled with -catenin-GFP (see also Movies 1-4 in the supplementary material). Genotypes are: control (A), Src42A^myri (B), btl>Src42A^RNAi; Src42A^26-1/+ (C) and Src42A^myri; Src64B^P1 (D). Arrows in magenta indicate the position of a dorsal trunk `bend', which is likely to be due to an excessive pulling force applied by the shortened dorsal branch. Green arrowheads indicate the position of the leading edge of dorsal epidermis. Inset shows an enlarged view of AJs in the dorsal branch. The images represent more than three independent embryos of each genotype.