"These beta cells are like tiny biological factories that churn out insulin. A single beta cell might make a million molecules of insulin a minute. That means the billion or so beta cells in the average healthy pancreas will make more copies of insulin every year than there are grains of sand on every beach and in every desert in the world."
"We have not regenerated the intricate mechanisms that regulate the levels of secretions," says Matthias Hebrok, director of the UC San Francisco Diabetes Center. "Beta cells are like a Porsche - an amazing, calibrated machine. What we've made is more like a Volkswagen Beetle.
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