Cell-cultivated meat may appear to be proceeding ever closer to being on sale in the United States, but production, cost, and formulation issues are still bedeviling the one-time disruptors.

This month, the USDA approved labeling of the food once called lab-grown meat. In quick succession the regulatory agency granted Eat Just and then Upside Foods approval of what the startups could call their product. The verdict: cell-cultivated meat.

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