About: http://webisa.webdatacommons.org/157431412

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Stem cells are extracted from the embryo at about three or four days old, before the cells have started to specialize to create a nervous system, spine and other features that transform the embryo into a fetus.
http://www.w3.org/ns/prov#wasQuotedFrom	amarillo.com