Figure 1.

Early passage growth of placenta-derived mesenchymal stromal cells from chorionic villus sampling-size tissues. Placenta-derived mesenchymal stromal cells (PMSCs) were isolated and expanded from chorionic villus sampling (CVS)-size tissue samples (n = 6). A: Photograph of a representative CVS-size mass of human early gestation chorionic villus tissue. The average tissue mass used in this experiment was 35.9 mg; B: Cell expansion data from the first three passages show that an average of 2.09 × 10⁶ cells were obtained by the third passage; C: Average days in vitro until passages 1, 2, and 3 were 18.83, 23.5, and 27 d, respectively.