Ultrastructural features of the transformation of the pseudostratified columnar ciliated epithelium to the stratified squamous epithelium in the human respiratory passages.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001980:Bronchi / Q000648:ultrastructure*; D002648:Child; D002923:Cilia / Q000648:ultrastructure; D004847:Epithelial Cells; D004848:Epithelium / Q000648:ultrastructure; D006801:Humans; D008875:Middle Aged; D014132:Trachea / Q000648:ultrastructure*