Evaluation of Wharton’s jelly (WJ)-mesenchymal stromal cell (MSC) growth expanded with 10% hPL, hS and FBS. (a) Proliferation Kinetics and viability of WJ-MSC expanded with different batches of hPL, hS and FBS determined by CellTiter-Glo Luminescent Cell Viability Assay (measurement units in Lum); (b) Representative micrographies of WJ-MSC showing cells in passage 2 expanded in hPL, hS and FBS after 4 days of culture (magnification 50X); (c) Population doubling (PD) and population doubling time (PDT) of WJ-MSC seeded with 10% hPL (green, n = 4 batches), hS (blue, n = 3 batches) and FBS (red, n = 2 batches). Data is represented as mean ± SD, * p < 0.05, analyzed by Tukey’s test.