title: Heterogeneity of the human thymus epithelial microenvironment at the ultrastructural level.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004777:Environment; D004848:Epithelium / Q000648:ultrastructure; D006801:Humans; D007223:Infant; D008854:Microscopy, Electron; D013950:Thymus Gland / Q000166:cytology / Q000648:ultrastructure*