Assertion: periosteum's cell | /r/HasProperty | fixed for 30 s
Facets:
value: briefly
type: MANNER
Source sentences:
text: Briefly, cells were fixed for 30 s using a fixative solution of two parts Citrate working solution (2 mL Citrate concentrate [Sigma] diluted in 98 mL of deionized water) with three parts acetone.