Fig. 2

Viability of WJ-MSCs evaluated using two methods: a – direct contact, b – indirect contact with PLGA biomaterial and reference materials after 72 h and 120 h of culture, expressed as a percentage of control (100 %); mean ± standard deviation; * p < 0.05 (ANOVA with post hoc LSD test), PVC – polyvinyl chloride, PLGA – poly(L-lactide-co-glycolide); UHMWPE – ultra-high molecular weight polyethylene