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Betamethasone, a synthetic glucocorticoid drug given to mothers who are at risk of giving birth prematurely, can cause harmful side effects such as hyperactivity and other behavioral abnormalities among guinea pigs; the effects persist even into the next generation.

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Betamethasone, a synthetic glucocorticoid drug given to mothers who are at risk of giving birth prematurely, can cause harmful side effects such as hyperactivity and other behavioral abnormalities among guinea pigs; the effects persist even into the next generation.

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