Assertion: mastoid process | /r/CapableOf | become aerated
Facets:
value: over the first year of life
type: TEMPORAL
Source sentences:
text: At birth, the mastoid is not pneumatized, but becomes aerated over the first year of life.
text: At birth, the mastoid is not pneumatized, but becomes aerated over the first year of life.
text: At birth, the mastoid is not pneumatized, but becomes aerated over the first year of life.