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Fig. 7. The FEZ graft does not alter hyoid arch pattern. (A) Side and (C) ventral view of normal, unoperated, and (B,D) chimeric embryo 5 days after transplantation of the FEZ to the hyoid arch demonstrates that no ectopic growth was observed after this transplantation. (C) The proximal region of the hyoid arch comprises the epibranchial (ec) and ceratobranchial cartilages (cc), while the more distal region of the hyoid arch comprises the basihyal (bh), the basibranchial (bb) and the entoglsossum (en). (D) After transplantation, these elements appear normal. mk, Meckel's cartilage; db, dentary bone; qu, quadrate; qj, qudratojugal; jb, jugal bar. Scale bar: 2 mm.