Assertion: lymph's cell | /r/AtLocation | the thymus
Facets:
Source sentences:
text: They are NOT the same as the epithelial reticular cells found in the thymus: epithelial reticular cells s are true epithelial cells derived from the endodermal lining of the third pharyngeal pouch in the embryo (the third pouch is what gives rise to the thymus) whereas reticular cells, like most connective tissue fibroblasts, are derived primarily from mesoderm.