Fig. 5. LET-756 can mediate SM chemoattraction. SM distributions in an egl-17(null) background. EGL-17 expressed from its native promoter consistently rescues egl-17(null) at both high and low concentrations. Expression of LET-756 from the egl-17 promoter can rescue the egl-17(null) chemoattraction defect in a subset of lines at a high concentration, but fails to rescue at the lower concentration. The egl-17(null) allele used was n1377. The control array contained only the transformation marker plasmid. The data for lines marked are also represented for comparison in Fig. 6. Asterisks indicate dorsally positioned SMs. % nEgl, percent non-Egl transgenic animals.

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