Assertion: neuroepithelium's cell | /r/HasProperty | observed by electron microscopy
Facets:
value: often
type: TEMPORAL
value: in the control retinas
type: LOCATION
Source sentences:
text: Similarly, although dead cells engulfed by neighbouring cells were often observed by electron microscopy in the control retinas (Figure 4B, panel a), we were unable to find a single dead cell engulfed by a neighbouring cell in the retinas exposed to 3-MA