| http://www.w3.org/ns/prov#value | - The meat in the burger has been made by knitting together around 20,000 strands of protein that has been cultured from cattle stem cells in Mr Post???s lab.The tissue is grown by placing the cells in a ring, like a donut, around a hub of nutrient gel, Mr Post explained.To prepare the burger, scientists combined the cultured beef with other ingredients normally used in burgers, such as salt, breadc
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