Fig. 4From: Changes in expression of cartilaginous genes during chondrogenesis of Wharton’s jelly mesenchymal stem cells on three-dimensional biodegradable poly(L-lactide-co-glycolide) scaffoldsWJ-MSC invasion of PLGA scaffolds after 14 days of culture in: a – upper and b – bottom surface (confocal laser scanning microscope Olympus FluoView, magnification 100x)Back to article page