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Fig. 4. Perturbation of Fz5/8 function during embryogenesis. (A)
Structure wild-type or dominant-negative forms of Fz5/8 encoded by cDNA
constructs. S, signal peptide; CRD, cysteine rich domain; TM, transmembrane
domain. (B) Phenotypes associated with the overexpression of FzE or
FzTM1. B1-B3, gastrula stages; B4-B6, pluteus. (C) Rescue of FzTM1
phenotype. Control (left), injection of FzTM1 alone (middle), and co-injection
of FzTM1 and Fz in a 1:2 ratio (right).