part of part of mesenchyme pharyngeal arch 6 pharyngeal arch mesenchymal region 6th arch mesenchyme UBERON:0010031 EMAPA:32765 FMA:318209 pharyngeal arch 6 mesenchyme Mesenchyme that is part of a pharyngeal arch 6. 6th branchial arch mesenchyme 6th arch mesenchyme 6th pharyngeal arch mesenchyme EHDAA2:0004076