UPSIDE Foods’ cultivated chicken made from growing animal cells. | Terry Chea/AP Photo The FDA has given a California startup approval to sell its lab-grown “cultivated” chicken. Now the USDA has to weigh in. On Wednesday, the US Food and Drug Administration (FDA) gave approval to Upside Foods, a startup based in the San Francisco area, to sell its lab-grown, or “cultivated,” chicken. The product — which is biologically indistinguishable from chicken meat taken from a slaughtered bird — is made by growing animal cells in bioreactors, which are fed a mix of nutrients to develop...