Assertion: epithelium's cell | /r/HasAspect | one layer
Facets:
Source sentences:
text: The cells are also categorized by their number of layers; simple epithelial cells have one layer, and stratified cells consist of multilayered epithelium.
text: Simple squamous cells are flat and only have one layer.
text: Simple cuboidal cells are cubes and only have one layer.
text: Simple columnar cells are long and only have one layer.
text: The ciliated columnar cells are also long and have one layer, but they have cilia.
text: Pseudostratified columnar cells are rectangular and have one layer, but they look like they have more layers.