Cows have shown an “insane” and “mind-blowing” ability to tackle HIV which will help develop a vaccine, say US researchers.
In a first for immunisation, the animals rapidly produced special types of antibody that can neutralise HIV.
It is thought cows evolved a supreme immune defence due to their complex and bacteria-packed digestive system.
The US National Institutes of Health said the findings were of “great interest”.
HIV is a slippery and nefarious opponent. It mutates so readily that every time a patient’s immune system finds a way of attacking the virus, HIV shifts its appearance.