In vitro fibroblast coverage, migration, and infiltration. (a–b)
(a) Representative confocal microscopy images of GFP-expressing human neonatal
dermal fibroblasts (HNDF) on nanofibers with (b) analysis of surface area
covered by cells at day 0, 5, 10, and 15. Scales are 50 μm. Bars
represent standard error, n=5, FOV=5 from 3 productions, *
indicates p < 0.05. (c–d) (c) Representative
binary images of tracking a single cell on nanofibers at day 0, 5, 10, and 15
for calculating (d) migration speed of HNDF. Scales are 50 μm. Bars
represent standard error, n=5, FOV=5 from 3 productions, *
indicates p < 0.05. (e-f) (e) Representative
3D-recontructed confocal microscopy images of HNDF on nanofibers after 15 days
of cell culture with (f) quantitative analysis of cell infiltration depth. Bars
represent standard error, n=5 for PCL and n=8
for CA and CA/SPH, FOV=3 from 3 productions, * indicates p
< 0.05.