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Researchers in China grafted the heads of smaller rats onto the necks of larger rats.

The scientists successfully avoided any brain-damaging blood loss, accomplishing the goal of the study published in 'CNS Neuroscience and Therapeutics.'

Blood vessels of the donor rat's head were attached to a third rat's blood vessels which kept blood flowing continuously to the donor rat's brain.

No damaging was detected on EEGs monitoring the donor rat's brain activity throughout the transplanting procedure. vice.com