Assertion: cementum | /r/HasProperty | secreted by specialized cells
Facets:
value: periodically
type: TEMPORAL
value: in the periodontal membrane
type: LOCATION
Source sentences:
text: Periodically secreted by specialized cells (cementoblasts) in the periodontal membrane, the cementum is a coarse material which binds and anchors the tooth to the periodontal ligament.