entire pharyngeal arch associated mesenchyme
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The sum total of mesenchymal tissue in the pharyngeal arch region. Pharyngeal mesenchyme is undifferentiated, loose connective tissue derived mostly from mesoderm, and also contains ectodermally derived neural crest cells. [ XAO:0004524 https://orcid.org/0000-0002-6601-2165 ]
Synonyms: entire branchial arch associated mesenchyme pharyngeal arch associated mesenchyme associated mesenchyme of pharyngeal region