Assertion: epithelium's layer | /r/AtLocation | underlying choroid
Facets:
value: firmly
type: MANNER
Source sentences:
text: The pigmented layer of retina or retinal pigment epithelium (RPE) is the pigmented cell layer just outside the neurosensory retina that nourishes retinal visual cells, and is firmly attached to the underlying choroid and overlying retinal visual cells.