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The laboratory developed tortilla contains probiotics -- live microorganisms found in yogurt and other fermented foods

Food scientist Raquel Gomez flips a tortilla that can be kept for weeks outside a refrigerator at a university laboratory in Mexico

Refrigerators are still a luxury for some Mexicans, such as these members of the Tzeltal Indigenous community who smoke meat to preserve it instead

The tortilla is a Mexican staple, consumed in tacos and other dishes by millions every day