Assertion: neuroepithelium | /r/HasProperty | absent
Facets:
Source sentences:
text: 1 Cells are well differentiated except in rare small foci of embryonic tissue; neuroepithelium is absent or rare Neuroepithelium absent or limited to fewer than one low-magnification field (x40) per slide 2 Moderate quantities of embryonic tissue present; cells show atypicality and mitotic activity