Assertion: brainstem's nucleus | /r/HasProperty | visible
Facets:
value: no longer
type: TEMPORAL
value: at this level
type: TEMPORAL
Source sentences:
text: Note also that Roller’s nucleus is no longer visible at this level.
text: The mesencephalic dopaminergic nuclei are visible to the unaided eye in gross specimens by the presence of a dark pigment named neuromelanin, which accumulates across the lifespan in the cell bodies of catecholaminergic neurons (Figure 3.11).