Sima, a 47-month-old lab rat, has broken the record to become the oldest living member of her species. The rat, whose name is the Hindi word for "limit" or "boundary" has reportedly achieved this feat thanks to experimental anti-ageing therapy, that can potentially be used in humans.

'Vampiric' treatment extends lifespan of lab rat. Can it be used in humans?

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'Vampiric' treatment extends lifespan of lab rat. Can it be used in humans?