Biocompatibility Test. To study the biocompatibility of
the fibrous samples, MC3T3-E1 cells were used in our system,
which are commonly used to assess cytotoxicity of materials.
MC3T3-E1 cells were maintained at RPMI-l640 medium
with 10% fetal bovine serum and 1% antibiotic/antimycotic
solution in a 5% CO
2
incubator at 37
∘
C, refreshed every
3 days with Trypsin-EDTA solution, and then resuspended