Assertion: periosteum's osteoblast | /r/HasProperty | derived without systemic contribution
Facets:
value: locally
type: LOCATION
value: from the initial mesenchymal condensations
type: OTHER
value: from invading blood vessels
type: TRANSITIVE-OBJECT
value: during development
type: TEMPORAL
Source sentences:
text: Thus, during development, osteoblasts within periosteum and bone marrow are derived locally from the initial mesenchymal condensations, and more specifically the perichondrium, without systemic contribution from invading blood vessels.