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The process in which a branchiomotor neuron growth cone in the branchial arch mesenchyme is directed to a specific target site in the branchial arch mesenchyme in response to an attractive chemical cue. Branchiomotor neurons are located in the hindbrain and innervate branchial arch-derived muscles that control jaw movements, facial expression, the larynx, and the pharynx. [GO_REF:0000021, GOC:cls, GOC:dgh, GOC:dph, GOC:jid, PMID:14699587]
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