Assertion: bone marrow's stem cell | /r/CapableOf | form osteoblast
Facets:
value: under permissive conditions
type: TEMPORAL
Source sentences:
text: Osteochondroprogenitor cells differentiate under the influence of growth factors, although isolated mesenchymal stem cells in tissue culture may also form osteoblasts under permissive conditions that include vitamin C and substrates for alkaline phosphatase, a key enzyme that provides high concentrations of phosphate at the mineral deposition site.