Assertion: epidermis | /r/MadeOf | no blood vessels
Facets:
Source sentences:
text: The epidermis contains no blood vessels.
text: It contains blood vessels.
text: The epidermis contains no blood vessels, and cells in the deepest layers are nourished almost exclusively by diffused oxygen from the surrounding air and to a far lesser degree by blood capillaries extending to the outer layers of the dermis.
text: The epidermis contains no blood vessels and is nourished by diffusion from the dermis.
text: The epidermis contains no blood vessels, and cells in the deepest layers are nourished by diffusion from blood capillaries present in the upper layers of the dermis.