Assertion: spheroid's cell | /r/HasProperty | maintained in rpmi-1640 medium
Facets:
Source sentences:
text: Cells were maintained in RPMI-1640 medium (HyClone, MA, USA) supplemented with 10% FBS (HyClone), 25 mM 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES; Invitrogen, CA, USA), 25 mM NaHCO 3 (Invitrogen), and 1% penicillin/streptomycin (HyClone).