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"This finding helps us to better understand how the body maintains a balance between cell protection and defence mechanisms. This could open up new avenues for the treatment of inflammatory diseases."

It also declined to comment on whether any defence mechanisms were used, but said it retained "the right to protect" installations.

Kyran, 26, is now proud of being confident and uplifting others through drag, but says "it did start as a defence mechanism, because it was a way for me to try and survive".

The results from the Burga group cement the evolutionary link between parent-specific gene expression and host defence mechanisms, tracing the origins back to organisms that lack DNA methylation and canonical imprinting.

Strikingly, these moths lack hearing organs and are therefore not aware of their unique defence mechanism, nor do they have the capability to control it using muscular action.