Within four weeks, the cells had spontaneously re-organised and grown into a replacement organ that had the same structure and complexity as a healthy adult thymus.

On average, people with the disease paid 133 - nearly four times the 37 average cost of an annual travel policy for a healthy adult.

This program sought to promote positive identity and competence by creating a strong bond with a healthy adult.

Calves were vulnerable to wolves, while healthy adult aurochs probably did not have to fear these predators.

They make up approximately 1% of the total blood volume in a healthy adult.