Figure 1From: Expression of early transcription factors Oct-4, Sox-2 and Nanog by porcine umbilical cord (PUC) matrix cellsPUC cells isolated from Wharton's jelly explants form colonies. Typical morphology of PUC cells after 1–2 weeks in culture. Spindle-shaped PUC cells adhered to plastic growth plates and formed colonies of tightly-packed, small round cells. PUC cells have been maintained in culture for up to 14 passages without noticeable change. Bar = 200 μM.Back to article page